396440395712 has 42 divisors (see below), whose sum is σ = 820940190984. Its totient is φ = 189590375040.

The previous prime is 396440395699. The next prime is 396440395723. The reversal of 396440395712 is 217593044693.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24148787 + ... + 24165197.

Almost surely, 2^396440395712 is an apocalyptic number.

396440395712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

396440395712 is an abundant number, since it is smaller than the sum of its proper divisors (424499795272).

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

396440395712 is an frugal number, since it uses more digits than its factorization.

396440395712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32857 (or 16436 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 396440395712 in words is "three hundred ninety-six billion, four hundred forty million, three hundred ninety-five thousand, seven hundred twelve".