397649543087104 has 297 divisors, whose sum is σ = 1016522711830101. Its totient is φ = 154909249904640.

The previous prime is 397649543086963. The next prime is 397649543087117. The reversal of 397649543087104 is 401780345946793.

The square root of 397649543087104 is 19941152.

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., 174100635878400 + 223548907208704 = 13194720^2 + 14951552^2 .

It is a super-2 number, since 2×397649543087104² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49134994482 + ... + 49135002574.

Almost surely, 2^{397649543087104} is an apocalyptic number.

397649543087104 is the 19941152-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397649543087104

397649543087104 is an abundant number, since it is smaller than the sum of its proper divisors (618873168742997).

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

397649543087104 is an frugal number, since it uses more digits than its factorization.

397649543087104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16242 (or 8113 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 70.

The spelling of 397649543087104 in words is "three hundred ninety-seven trillion, six hundred forty-nine billion, five hundred forty-three million, eighty-seven thousand, one hundred four".