389056397 has 4 divisors (see below), whose sum is σ = 389100096. Its totient is φ = 389012700.

The previous prime is 389056309. The next prime is 389056399. The reversal of 389056397 is 793650983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 793650983 = 3943 ⋅201281.

It is a cyclic number.

It is not a de Polignac number, because 389056397 - 2²⁰ = 388007821 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 (389056399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3173 + ... + 28074.

It is an arithmetic number, because the mean of its divisors is an integer number (97275024).

Almost surely, 2^389056397 is an apocalyptic number.

It is an amenable number.

389056397 is a deficient number, since it is larger than the sum of its proper divisors (43699).

389056397 is a wasteful number, since it uses less digits than its factorization.

389056397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43698.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 389056397 is about 19724.5125922036. The cubic root of 389056397 is about 730.0246423157.

The spelling of 389056397 in words is "three hundred eighty-nine million, fifty-six thousand, three hundred ninety-seven".