389143760 has 20 divisors (see below), whose sum is σ = 904759428. Its totient is φ = 155657472.

The previous prime is 389143717. The next prime is 389143771. The reversal of 389143760 is 67341983.

It can be written as a sum of positive squares in 2 ways, for example, as 133911184 + 255232576 = 11572^2 + 15976^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2432069 + ... + 2432228.

Almost surely, 2^389143760 is an apocalyptic number.

It is an amenable number.

389143760 is an abundant number, since it is smaller than the sum of its proper divisors (515615668).

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

389143760 is a wasteful number, since it uses less digits than its factorization.

389143760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864310 (or 4864304 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 389143760 is about 19726.7270473335. The cubic root of 389143760 is about 730.0792808121.

The spelling of 389143760 in words is "three hundred eighty-nine million, one hundred forty-three thousand, seven hundred sixty".