389644854 has 32 divisors (see below), whose sum is σ = 804856416. Its totient is φ = 125660160.

The previous prime is 389644847. The next prime is 389644861. The reversal of 389644854 is 458446983.

It is an interprime number because it is at equal distance from previous prime (389644847) and next prime (389644861).

It is a super-2 number, since 2×389644854² = 303646224497362632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389644797 and 389644806.

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, 35334 + ... + 45030.

It is an arithmetic number, because the mean of its divisors is an integer number (25151763).

Almost surely, 2^389644854 is an apocalyptic number.

389644854 is an abundant number, since it is smaller than the sum of its proper divisors (415211562).

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

389644854 is a wasteful number, since it uses less digits than its factorization.

389644854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920.

The product of its digits is 3317760, while the sum is 51.

The square root of 389644854 is about 19739.4238517744. The cubic root of 389644854 is about 730.3925167496.

The spelling of 389644854 in words is "three hundred eighty-nine million, six hundred forty-four thousand, eight hundred fifty-four".