396807420 has 48 divisors (see below), whose sum is σ = 1112475168. Its totient is φ = 105680640.

The previous prime is 396807401. The next prime is 396807443. The reversal of 396807420 is 24708693.

It is a super-2 number, since 2×396807420² = 314912257134112800, which contains 22 as substring.

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, 48850 + ... + 56390.

It is an arithmetic number, because the mean of its divisors is an integer number (23176566).

Almost surely, 2^396807420 is an apocalyptic number.

396807420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

396807420 is an abundant number, since it is smaller than the sum of its proper divisors (715667748).

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

396807420 is a wasteful number, since it uses less digits than its factorization.

396807420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8430 (or 8428 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 396807420 is about 19920.0256023932. The cubic root of 396807420 is about 734.8408003575.

The spelling of 396807420 in words is "three hundred ninety-six million, eight hundred seven thousand, four hundred twenty".