397539274963 has 4 divisors (see below), whose sum is σ = 398530645128. Its totient is φ = 396547904800.

The previous prime is 397539274943. The next prime is 397539274987. The reversal of 397539274963 is 369472935793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369472935793 = 13 ⋅28420995061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397539274963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397539274943) 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 3 ways as a sum of consecutive naturals, for example, 495684481 + ... + 495685282.

It is an arithmetic number, because the mean of its divisors is an integer number (99632661282).

Almost surely, 2^397539274963 is an apocalyptic number.

397539274963 is a deficient number, since it is larger than the sum of its proper divisors (991370165).

397539274963 is an equidigital number, since it uses as much as digits as its factorization.

397539274963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991370164.

The product of its digits is 231472080, while the sum is 67.

The spelling of 397539274963 in words is "three hundred ninety-seven billion, five hundred thirty-nine million, two hundred seventy-four thousand, nine hundred sixty-three".