Base | Representation |
---|---|
bin | 11110100001000110000 |
3 | 1212210201110 |
4 | 3310020300 |
5 | 223444414 |
6 | 33233320 |
7 | 11333256 |
oct | 3641060 |
9 | 1783643 |
10 | 999984 |
11 | 623337 |
12 | 402840 |
13 | 29020b |
14 | 1c05d6 |
15 | 14b459 |
hex | f4230 |
999984 has 40 divisors (see below), whose sum is σ = 2624832. Its totient is φ = 328000.
The previous prime is 999983. The next prime is 1000003. The reversal of 999984 is 489999.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (48).
It is a nialpdrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (999983) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3859 + ... + 4109.
2999984 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 999984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1312416).
999984 is an abundant number, since it is smaller than the sum of its proper divisors (1624848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
999984 is a wasteful number, since it uses less digits than its factorization.
999984 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 345 (or 339 counting only the distinct ones).
The product of its digits is 209952, while the sum is 48.
The square root of 999984 is about 999.9919999680. The cubic root of 999984 is about 99.9994666638. Note that the first 3 decimals are identical.
The spelling of 999984 in words is "nine hundred ninety-nine thousand, nine hundred eighty-four".
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