389657090 has 8 divisors (see below), whose sum is σ = 701382780. Its totient is φ = 155862832.

The previous prime is 389657087. The next prime is 389657117. The reversal of 389657090 is 90756983.

It can be written as a sum of positive squares in 2 ways, for example, as 378574849 + 11082241 = 19457^2 + 3329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19482845 + ... + 19482864.

Almost surely, 2^389657090 is an apocalyptic number.

389657090 is a deficient number, since it is larger than the sum of its proper divisors (311725690).

389657090 is a wasteful number, since it uses less digits than its factorization.

389657090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38965716.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 389657090 is about 19739.7337874653. The cubic root of 389657090 is about 730.4001621641.

The spelling of 389657090 in words is "three hundred eighty-nine million, six hundred fifty-seven thousand, ninety".