389409076 has 18 divisors (see below), whose sum is σ = 792726018. Its totient is φ = 166889520.

The previous prime is 389409049. The next prime is 389409077. The reversal of 389409076 is 670904983.

It can be written as a sum of positive squares in only one way, i.e., 241056676 + 148352400 = 15526^2 + 12180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389409077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 993195 + ... + 993586.

Almost surely, 2^389409076 is an apocalyptic number.

It is an amenable number.

389409076 is an abundant number, since it is smaller than the sum of its proper divisors (403316942).

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

389409076 is a wasteful number, since it uses less digits than its factorization.

389409076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986799 (or 1986790 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 389409076 is about 19733.4506865880. The cubic root of 389409076 is about 730.2451644174.

The spelling of 389409076 in words is "three hundred eighty-nine million, four hundred nine thousand, seventy-six".