999970504 has 64 divisors (see below), whose sum is σ = 2105611200. Its totient is φ = 442181376.

The previous prime is 999970501. The next prime is 999970591. The reversal of 999970504 is 405079999.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (999970501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234907 + ... + 239125.

It is an arithmetic number, because the mean of its divisors is an integer number (32900175).

Almost surely, 2^999970504 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 999970504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052805600).

999970504 is an abundant number, since it is smaller than the sum of its proper divisors (1105640696).

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

999970504 is a wasteful number, since it uses less digits than its factorization.

999970504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334 (or 4330 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 999970504 is about 31622.3102255354. The cubic root of 999970504 is about 999.9901679033.

The spelling of 999970504 in words is "nine hundred ninety-nine million, nine hundred seventy thousand, five hundred four".