999397900 has 36 divisors (see below), whose sum is σ = 2179634800. Its totient is φ = 397742400.

The previous prime is 999397793. The next prime is 999397951. The reversal of 999397900 is 9793999.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5211 + ... + 45010.

Almost surely, 2^999397900 is an apocalyptic number.

It is an amenable number.

999397900 is an abundant number, since it is smaller than the sum of its proper divisors (1180236900).

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

999397900 is a wasteful number, since it uses less digits than its factorization.

999397900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50434 (or 50427 counting only the distinct ones).

The product of its (nonzero) digits is 1240029, while the sum is 55.

The square root of 999397900 is about 31613.2551313527. The cubic root of 999397900 is about 999.7992597060.

The spelling of 999397900 in words is "nine hundred ninety-nine million, three hundred ninety-seven thousand, nine hundred".