397093729056 has 48 divisors (see below), whose sum is σ = 1042498554048. Its totient is φ = 132348384000.

The previous prime is 397093729027. The next prime is 397093729073. The reversal of 397093729056 is 650927390793.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×397093729056² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549006 + ... + 1046706.

It is an arithmetic number, because the mean of its divisors is an integer number (21718719876).

Almost surely, 2^397093729056 is an apocalyptic number.

It is an amenable number.

397093729056 is an abundant number, since it is smaller than the sum of its proper divisors (645404824992).

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

397093729056 is a wasteful number, since it uses less digits than its factorization.

397093729056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506025 (or 506017 counting only the distinct ones).

The product of its (nonzero) digits is 19289340, while the sum is 60.

It can be divided in two parts, 3970937 and 29056, that added together give a palindrome (3999993).

The spelling of 397093729056 in words is "three hundred ninety-seven billion, ninety-three million, seven hundred twenty-nine thousand, fifty-six".