389332775 has 12 divisors (see below), whose sum is σ = 519909432. Its totient is φ = 287507040.

The previous prime is 389332771. The next prime is 389332789. The reversal of 389332775 is 577233983.

It is not a de Polignac number, because 389332775 - 2² = 389332771 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389332771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 598649 + ... + 599298.

It is an arithmetic number, because the mean of its divisors is an integer number (43325786).

Almost surely, 2^389332775 is an apocalyptic number.

389332775 is a deficient number, since it is larger than the sum of its proper divisors (130576657).

389332775 is a wasteful number, since it uses less digits than its factorization.

389332775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197970 (or 1197965 counting only the distinct ones).

The product of its digits is 952560, while the sum is 47.

The square root of 389332775 is about 19731.5173010086. The cubic root of 389332775 is about 730.1974664400.

The spelling of 389332775 in words is "three hundred eighty-nine million, three hundred thirty-two thousand, seven hundred seventy-five".