999957504 has 352 divisors, whose sum is σ = 3393107200. Its totient is φ = 260112384.

The previous prime is 999957503. The next prime is 999957509. The reversal of 999957504 is 405759999.

It is not an unprimeable number, because it can be changed into a prime (999957503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13698012 + ... + 13698084.

Almost surely, 2^999957504 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 999957504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696553600).

999957504 is an abundant number, since it is smaller than the sum of its proper divisors (2393149696).

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

999957504 is a wasteful number, since it uses less digits than its factorization.

999957504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 57.

The square root of 999957504 is about 31622.1046737879. The cubic root of 999957504 is about 999.9858344660.

The spelling of 999957504 in words is "nine hundred ninety-nine million, nine hundred fifty-seven thousand, five hundred four".