395989512 has 16 divisors (see below), whose sum is σ = 989973840. Its totient is φ = 131996496.

The previous prime is 395989511. The next prime is 395989513. The reversal of 395989512 is 215989593.

It is an interprime number because it is at equal distance from previous prime (395989511) and next prime (395989513).

It is a super-2 number, since 2×395989512² = 313615387227996288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395989511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8249758 + ... + 8249805.

It is an arithmetic number, because the mean of its divisors is an integer number (61873365).

Almost surely, 2^395989512 is an apocalyptic number.

It is an amenable number.

395989512 is an abundant number, since it is smaller than the sum of its proper divisors (593984328).

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

395989512 is a wasteful number, since it uses less digits than its factorization.

395989512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16499572 (or 16499568 counting only the distinct ones).

The product of its digits is 874800, while the sum is 51.

The square root of 395989512 is about 19899.4852194724. The cubic root of 395989512 is about 734.3355631685.

The spelling of 395989512 in words is "three hundred ninety-five million, nine hundred eighty-nine thousand, five hundred twelve".