397295307623824 has 45 divisors (see below), whose sum is σ = 773798685903873. Its totient is φ = 197610737366016.

The previous prime is 397295307623821. The next prime is 397295307623899. The reversal of 397295307623824 is 428326703592793.

It is a happy number.

The square root of 397295307623824 is 19932268.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 96260037888400 + 301035269735424 = 9811220^2 + 17350368^2 .

It is a super-2 number, since 2×397295307623824² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397295307623821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15387697987 + ... + 15387723805.

Almost surely, 2^{397295307623824} is an apocalyptic number.

397295307623824 is the 19932268-th square number.

It is an amenable number.

397295307623824 is a deficient number, since it is larger than the sum of its proper divisors (376503378280049).

397295307623824 is an frugal number, since it uses more digits than its factorization.

397295307623824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52032 (or 26014 counting only the distinct ones).

The product of its (nonzero) digits is 823011840, while the sum is 70.

The spelling of 397295307623824 in words is "three hundred ninety-seven trillion, two hundred ninety-five billion, three hundred seven million, six hundred twenty-three thousand, eight hundred twenty-four".