389857424 has 20 divisors (see below), whose sum is σ = 824017200. Its totient is φ = 177207840.

The previous prime is 389857421. The next prime is 389857451. The reversal of 389857424 is 424758983.

It is a super-2 number, since 2×389857424² = 303977622095831552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389857421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107374 + ... + 1107725.

It is an arithmetic number, because the mean of its divisors is an integer number (41200860).

Almost surely, 2^389857424 is an apocalyptic number.

It is an amenable number.

389857424 is an abundant number, since it is smaller than the sum of its proper divisors (434159776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389857424 is a wasteful number, since it uses less digits than its factorization.

389857424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215118 (or 2215112 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 389857424 is about 19744.8075199532. The cubic root of 389857424 is about 730.5253140139.

The spelling of 389857424 in words is "three hundred eighty-nine million, eight hundred fifty-seven thousand, four hundred twenty-four".