396813307 has 8 divisors (see below), whose sum is σ = 434431152. Its totient is φ = 359452800.

The previous prime is 396813253. The next prime is 396813311. The reversal of 396813307 is 703318693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396813307 is a prime.

It is a super-2 number, since 2×396813307² = 314921601224552498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396813307.

It is not an unprimeable number, because it can be changed into a prime (396813317) 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, 61098 + ... + 67279.

It is an arithmetic number, because the mean of its divisors is an integer number (54303894).

Almost surely, 2^396813307 is an apocalyptic number.

396813307 is a deficient number, since it is larger than the sum of its proper divisors (37617845).

396813307 is a wasteful number, since it uses less digits than its factorization.

396813307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128669.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 396813307 is about 19920.1733677195. The cubic root of 396813307 is about 734.8444343507.

The spelling of 396813307 in words is "three hundred ninety-six million, eight hundred thirteen thousand, three hundred seven".