397594879 has 4 divisors (see below), whose sum is σ = 433739880. Its totient is φ = 361449880.

The previous prime is 397594829. The next prime is 397594909. The reversal of 397594879 is 978495793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978495793 = 11 ⋅88954163.

It is not a de Polignac number, because 397594879 - 2⁷ = 397594751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397594829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18072484 + ... + 18072505.

It is an arithmetic number, because the mean of its divisors is an integer number (108434970).

Almost surely, 2^397594879 is an apocalyptic number.

397594879 is a deficient number, since it is larger than the sum of its proper divisors (36145001).

397594879 is a wasteful number, since it uses less digits than its factorization.

397594879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36145000.

The product of its digits is 17146080, while the sum is 61.

The square root of 397594879 is about 19939.7813177577. The cubic root of 397594879 is about 735.3265730649.

The spelling of 397594879 in words is "three hundred ninety-seven million, five hundred ninety-four thousand, eight hundred seventy-nine".