389427880 has 32 divisors (see below), whose sum is σ = 876876840. Its totient is φ = 155653120.

The previous prime is 389427877. The next prime is 389427901. The reversal of 389427880 is 88724983.

It can be written as a sum of positive squares in 4 ways, for example, as 275493604 + 113934276 = 16598^2 + 10674^2 .

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, 66012 + ... + 71668.

Almost surely, 2^389427880 is an apocalyptic number.

It is an amenable number.

389427880 is an abundant number, since it is smaller than the sum of its proper divisors (487448960).

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

389427880 is a wasteful number, since it uses less digits than its factorization.

389427880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7389 (or 7385 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 389427880 is about 19733.9271307056. The cubic root of 389427880 is about 730.2569183884.

The spelling of 389427880 in words is "three hundred eighty-nine million, four hundred twenty-seven thousand, eight hundred eighty".