396956884 has 24 divisors (see below), whose sum is σ = 699791400. Its totient is φ = 197022720.

The previous prime is 396956881. The next prime is 396956887. The reversal of 396956884 is 488659693.

It is an interprime number because it is at equal distance from previous prime (396956881) and next prime (396956887).

It can be written as a sum of positive squares in 4 ways, for example, as 247432900 + 149523984 = 15730^2 + 12228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396956881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490272 + ... + 491080.

It is an arithmetic number, because the mean of its divisors is an integer number (29157975).

Almost surely, 2^396956884 is an apocalyptic number.

It is an amenable number.

396956884 is a deficient number, since it is larger than the sum of its proper divisors (302834516).

396956884 is a wasteful number, since it uses less digits than its factorization.

396956884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1561 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 58.

The square root of 396956884 is about 19923.7768507881. The cubic root of 396956884 is about 734.9330520415.

The spelling of 396956884 in words is "three hundred ninety-six million, nine hundred fifty-six thousand, eight hundred eighty-four".