396856830 has 32 divisors (see below), whose sum is σ = 956181024. Its totient is φ = 105414656.

The previous prime is 396856807. The next prime is 396856849. The reversal of 396856830 is 38658693.

It is a self number, because there is not a number n which added to its sum of digits gives 396856830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18027 + ... + 33446.

It is an arithmetic number, because the mean of its divisors is an integer number (29880657).

Almost surely, 2^396856830 is an apocalyptic number.

396856830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

396856830 is an abundant number, since it is smaller than the sum of its proper divisors (559324194).

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

396856830 is a wasteful number, since it uses less digits than its factorization.

396856830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51740.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 396856830 is about 19921.2657730376. The cubic root of 396856830 is about 734.8712995998.

The spelling of 396856830 in words is "three hundred ninety-six million, eight hundred fifty-six thousand, eight hundred thirty".