389952279 has 32 divisors (see below), whose sum is σ = 594570240. Its totient is φ = 252467136.

The previous prime is 389952263. The next prime is 389952293. The reversal of 389952279 is 972259983.

It is not a de Polignac number, because 389952279 - 2⁴ = 389952263 is a prime.

Its product of digits (2449440) is a multiple of the sum of its prime divisors (2430).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389952679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172732 + ... + 174974.

It is an arithmetic number, because the mean of its divisors is an integer number (18580320).

Almost surely, 2^389952279 is an apocalyptic number.

389952279 is a deficient number, since it is larger than the sum of its proper divisors (204617961).

389952279 is a wasteful number, since it uses less digits than its factorization.

389952279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2430 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 389952279 is about 19747.2093977858. The cubic root of 389952279 is about 730.5845564918.

The spelling of 389952279 in words is "three hundred eighty-nine million, nine hundred fifty-two thousand, two hundred seventy-nine".