389733642 has 24 divisors (see below), whose sum is σ = 852174180. Its totient is φ = 128718720.

The previous prime is 389733637. The next prime is 389733661. The reversal of 389733642 is 246337983.

It can be written as a sum of positive squares in 2 ways, for example, as 347859801 + 41873841 = 18651^2 + 6471^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97359 + ... + 101282.

Almost surely, 2^389733642 is an apocalyptic number.

389733642 is an abundant number, since it is smaller than the sum of its proper divisors (462440538).

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

389733642 is a wasteful number, since it uses less digits than its factorization.

389733642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198758 (or 198755 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 389733642 is about 19741.6727254810. The cubic root of 389733642 is about 730.4479904841.

The spelling of 389733642 in words is "three hundred eighty-nine million, seven hundred thirty-three thousand, six hundred forty-two".