389480990 has 16 divisors (see below), whose sum is σ = 702209520. Its totient is φ = 155538240.

The previous prime is 389480989. The next prime is 389481013. The reversal of 389480990 is 99084983.

It is a congruent number.

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, 25271 + ... + 37650.

It is an arithmetic number, because the mean of its divisors is an integer number (43888095).

Almost surely, 2^389480990 is an apocalyptic number.

389480990 is a deficient number, since it is larger than the sum of its proper divisors (312728530).

389480990 is a wasteful number, since it uses less digits than its factorization.

389480990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63547.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 389480990 is about 19735.2727369043. The cubic root of 389480990 is about 730.2901142500.

The spelling of 389480990 in words is "three hundred eighty-nine million, four hundred eighty thousand, nine hundred ninety".