389693090 has 16 divisors (see below), whose sum is σ = 717761088. Its totient is φ = 152252016.

The previous prime is 389693089. The next prime is 389693093. The reversal of 389693090 is 90396983.

It is not an unprimeable number, because it can be changed into a prime (389693093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452702 + ... + 453561.

It is an arithmetic number, because the mean of its divisors is an integer number (44860068).

Almost surely, 2^389693090 is an apocalyptic number.

389693090 is a deficient number, since it is larger than the sum of its proper divisors (328067998).

389693090 is a wasteful number, since it uses less digits than its factorization.

389693090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906313.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 389693090 is about 19740.6456328054. The cubic root of 389693090 is about 730.4226551002.

The spelling of 389693090 in words is "three hundred eighty-nine million, six hundred ninety-three thousand, ninety".