389961408 has 56 divisors (see below), whose sum is σ = 1034661888. Its totient is φ = 129623296.

The previous prime is 389961391. The next prime is 389961427. The reversal of 389961408 is 804169983.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70885 + ... + 76187.

Almost surely, 2^389961408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389961408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517330944).

389961408 is an abundant number, since it is smaller than the sum of its proper divisors (644700480).

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

389961408 is a wasteful number, since it uses less digits than its factorization.

389961408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701 (or 5691 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 389961408 is about 19747.4405430172. The cubic root of 389961408 is about 730.5902575778.

It can be divided in two parts, 38996 and 1408, that added together give a palindrome (40404).

The spelling of 389961408 in words is "three hundred eighty-nine million, nine hundred sixty-one thousand, four hundred eight".