389778996 has 48 divisors (see below), whose sum is σ = 988252160. Its totient is φ = 119115360.

The previous prime is 389778973. The next prime is 389779007. The reversal of 389778996 is 699877983.

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, 20506 + ... + 34641.

Almost surely, 2^389778996 is an apocalyptic number.

It is an amenable number.

389778996 is an abundant number, since it is smaller than the sum of its proper divisors (598473164).

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

389778996 is a wasteful number, since it uses less digits than its factorization.

389778996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55204 (or 55202 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 66.

The square root of 389778996 is about 19742.8213789215. The cubic root of 389778996 is about 730.4763238975.

The spelling of 389778996 in words is "three hundred eighty-nine million, seven hundred seventy-eight thousand, nine hundred ninety-six".