396988845 has 32 divisors (see below), whose sum is σ = 733691520. Its totient is φ = 181155840.

The previous prime is 396988829. The next prime is 396988847. The reversal of 396988845 is 548889693.

It is a happy number.

It is not a de Polignac number, because 396988845 - 2⁴ = 396988829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396988847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67960 + ... + 73569.

It is an arithmetic number, because the mean of its divisors is an integer number (22927860).

Almost surely, 2^396988845 is an apocalyptic number.

It is an amenable number.

396988845 is a deficient number, since it is larger than the sum of its proper divisors (336702675).

396988845 is a wasteful number, since it uses less digits than its factorization.

396988845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141565.

The product of its digits is 14929920, while the sum is 60.

The square root of 396988845 is about 19924.5789165041. The cubic root of 396988845 is about 734.9527759006.

The spelling of 396988845 in words is "three hundred ninety-six million, nine hundred eighty-eight thousand, eight hundred forty-five".