389320365 has 16 divisors (see below), whose sum is σ = 711900288. Its totient is φ = 177974976.

The previous prime is 389320339. The next prime is 389320403. The reversal of 389320365 is 563023983.

It is not a de Polignac number, because 389320365 - 2⁶ = 389320301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853802 + ... + 1854011.

It is an arithmetic number, because the mean of its divisors is an integer number (44493768).

Almost surely, 2^389320365 is an apocalyptic number.

389320365 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

389320365 is a deficient number, since it is larger than the sum of its proper divisors (322579923).

389320365 is a wasteful number, since it uses less digits than its factorization.

389320365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707828.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 389320365 is about 19731.2028269946. The cubic root of 389320365 is about 730.1897079984.

It can be divided in two parts, 38 and 9320365, that added together give a triangular number (9320403 = T₄₃₁₇).

The spelling of 389320365 in words is "three hundred eighty-nine million, three hundred twenty thousand, three hundred sixty-five".