397216302839 has 16 divisors (see below), whose sum is σ = 414047894400. Its totient is φ = 380604801024.

The previous prime is 397216302827. The next prime is 397216302883. The reversal of 397216302839 is 938203612793.

It is a cyclic number.

It is not a de Polignac number, because 397216302839 - 2²⁴ = 397199525623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397216302139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905794 + ... + 2103920.

It is an arithmetic number, because the mean of its divisors is an integer number (25877993400).

Almost surely, 2^397216302839 is an apocalyptic number.

397216302839 is a deficient number, since it is larger than the sum of its proper divisors (16831591561).

397216302839 is a wasteful number, since it uses less digits than its factorization.

397216302839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198682.

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 397216302839 in words is "three hundred ninety-seven billion, two hundred sixteen million, three hundred two thousand, eight hundred thirty-nine".