999670900 has 18 divisors (see below), whose sum is σ = 2169286070. Its totient is φ = 399868320.

The previous prime is 999670877. The next prime is 999670943. The reversal of 999670900 is 9076999.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 231161616 + 768509284 = 15204^2 + 27722^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4998255 + ... + 4998454.

Almost surely, 2^999670900 is an apocalyptic number.

It is an amenable number.

999670900 is an abundant number, since it is smaller than the sum of its proper divisors (1169615170).

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

999670900 is a wasteful number, since it uses less digits than its factorization.

999670900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996723 (or 9996716 counting only the distinct ones).

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 999670900 is about 31617.5726456033. The cubic root of 999670900 is about 999.8902879637.

The spelling of 999670900 in words is "nine hundred ninety-nine million, six hundred seventy thousand, nine hundred".