396435956 has 48 divisors (see below), whose sum is σ = 804384000. Its totient is φ = 167455488.

The previous prime is 396435947. The next prime is 396435959. The reversal of 396435956 is 659534693.

It is a super-4 number, since 4×396435956⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396435959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696440 + ... + 697008.

It is an arithmetic number, because the mean of its divisors is an integer number (16758000).

Almost surely, 2^396435956 is an apocalyptic number.

It is an amenable number.

396435956 is an abundant number, since it is smaller than the sum of its proper divisors (407948044).

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

396435956 is a wasteful number, since it uses less digits than its factorization.

396435956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 894 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 50.

The square root of 396435956 is about 19910.6995356768. The cubic root of 396435956 is about 734.6114261814.

The spelling of 396435956 in words is "three hundred ninety-six million, four hundred thirty-five thousand, nine hundred fifty-six".