389603478 has 64 divisors (see below), whose sum is σ = 878625792. Its totient is φ = 114149280.

The previous prime is 389603453. The next prime is 389603497. The reversal of 389603478 is 874306983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303025 + ... + 304307.

It is an arithmetic number, because the mean of its divisors is an integer number (13728528).

Almost surely, 2^389603478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389603478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439312896).

389603478 is an abundant number, since it is smaller than the sum of its proper divisors (489022314).

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

389603478 is a wasteful number, since it uses less digits than its factorization.

389603478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 389603478 is about 19738.3757690444. The cubic root of 389603478 is about 730.3666626158.

The spelling of 389603478 in words is "three hundred eighty-nine million, six hundred three thousand, four hundred seventy-eight".