396842808 has 32 divisors (see below), whose sum is σ = 1013218560. Its totient is φ = 129466080.

The previous prime is 396842773. The next prime is 396842843. The reversal of 396842808 is 808248693.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (396842773) and next prime (396842843).

It is a super-2 number, since 2×396842808² = 314968428522649728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174778 + ... + 177033.

It is an arithmetic number, because the mean of its divisors is an integer number (31663080).

Almost surely, 2^396842808 is an apocalyptic number.

It is an amenable number.

396842808 is an abundant number, since it is smaller than the sum of its proper divisors (616375752).

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

396842808 is a wasteful number, since it uses less digits than its factorization.

396842808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351867 (or 351863 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 396842808 is about 19920.9138344605. The cubic root of 396842808 is about 734.8626445166.

The spelling of 396842808 in words is "three hundred ninety-six million, eight hundred forty-two thousand, eight hundred eight".