389723967 has 10 divisors (see below), whose sum is σ = 582180368. Its totient is φ = 259815924.

The previous prime is 389723959. The next prime is 389723977. The reversal of 389723967 is 769327983.

It is not a de Polignac number, because 389723967 - 2³ = 389723959 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 (389723947) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2405623 + ... + 2405784.

Almost surely, 2^389723967 is an apocalyptic number.

389723967 is a deficient number, since it is larger than the sum of its proper divisors (192456401).

389723967 is an equidigital number, since it uses as much as digits as its factorization.

389723967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811419 (or 4811410 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 389723967 is about 19741.4276839341. The cubic root of 389723967 is about 730.4419460630.

The spelling of 389723967 in words is "three hundred eighty-nine million, seven hundred twenty-three thousand, nine hundred sixty-seven".