| Base | Representation |
|---|---|
| bin | 1110110111101001… |
| … | …0110100101011000 |
| 3 | 101022011201001121000 |
| 4 | 3231322112211120 |
| 5 | 31133310401143 |
| 6 | 1500023345000 |
| 7 | 200625110430 |
| oct | 35572264530 |
| 9 | 11264631530 |
| 10 | 3991497048 |
| 11 | 17691068a0 |
| 12 | 9348b2160 |
| 13 | 4b7c35396 |
| 14 | 29c17d2c0 |
| 15 | 185645bd3 |
| hex | ede96958 |
3991497048 has 512 divisors, whose sum is σ = 15427584000. Its totient is φ = 923166720.
The previous prime is 3991497047. The next prime is 3991497049. The reversal of 3991497048 is 8407941993.
3991497048 is a `hidden beast` number, since 399 + 149 + 70 + 48 = 666.
It is an interprime number because it is at equal distance from previous prime (3991497047) and next prime (3991497049).
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a junction number, because it is equal to n+sod(n) for n = 3991496985 and 3991497003.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3991497047) by changing a digit.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5371765 + ... + 5372507.
It is an arithmetic number, because the mean of its divisors is an integer number (30132000).
Almost surely, 23991497048 is an apocalyptic number.
3991497048 is a gapful number since it is divisible by the number (38) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3991497048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7713792000).
3991497048 is an abundant number, since it is smaller than the sum of its proper divisors (11436086952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3991497048 is a wasteful number, since it uses less digits than its factorization.
3991497048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 812 (or 802 counting only the distinct ones).
The product of its (nonzero) digits is 1959552, while the sum is 54.
The square root of 3991497048 is about 63178.2957035088. The cubic root of 3991497048 is about 1586.2754544368.
The spelling of 3991497048 in words is "three billion, nine hundred ninety-one million, four hundred ninety-seven thousand, forty-eight".
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