47909880 has 224 divisors, whose sum is σ = 169983360. Its totient is φ = 12130560.

The previous prime is 47909879. The next prime is 47909881. The reversal of 47909880 is 8890974.

It is an interprime number because it is at equal distance from previous prime (47909879) and next prime (47909881).

It is a super-2 number, since 2×47909880² = 4590713203228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47909881) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 903934 + ... + 903986.

Almost surely, 2^47909880 is an apocalyptic number.

47909880 is a gapful number since it is divisible by the number (40) 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 47909880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84991680).

47909880 is an abundant number, since it is smaller than the sum of its proper divisors (122073480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47909880 is a wasteful number, since it uses less digits than its factorization.

47909880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 47909880 is about 6921.6963238790. The cubic root of 47909880 is about 363.1965331489.

The spelling of 47909880 in words is "forty-seven million, nine hundred nine thousand, eight hundred eighty".