1009395988 has 12 divisors (see below), whose sum is σ = 1766665600. Its totient is φ = 504634392.

The previous prime is 1009395979. The next prime is 1009396021. The reversal of 1009395988 is 8895939001.

It is a super-2 number, since 2×1009395988² = 2037760521180992288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52495 + ... + 69097.

Almost surely, 2^1009395988 is an apocalyptic number.

It is an amenable number.

1009395988 is a deficient number, since it is larger than the sum of its proper divisors (757269612).

1009395988 is a wasteful number, since it uses less digits than its factorization.

1009395988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31806 (or 31804 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 1009395988 is about 31770.9928708563. The cubic root of 1009395988 is about 1003.1222374875.

The spelling of 1009395988 in words is "one billion, nine million, three hundred ninety-five thousand, nine hundred eighty-eight".