389053921 has 8 divisors (see below), whose sum is σ = 399358080. Its totient is φ = 378834288.

The previous prime is 389053909. The next prime is 389053933. The reversal of 389053921 is 129350983.

It is an interprime number because it is at equal distance from previous prime (389053909) and next prime (389053933).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389053921 - 2²⁵ = 355499489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389053321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11751 + ... + 30268.

It is an arithmetic number, because the mean of its divisors is an integer number (49919760).

Almost surely, 2^389053921 is an apocalyptic number.

It is an amenable number.

389053921 is a deficient number, since it is larger than the sum of its proper divisors (10304159).

389053921 is a wasteful number, since it uses less digits than its factorization.

389053921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42263.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 389053921 is about 19724.4498275617. The cubic root of 389053921 is about 730.0230936586.

The spelling of 389053921 in words is "three hundred eighty-nine million, fifty-three thousand, nine hundred twenty-one".