389657084 has 12 divisors (see below), whose sum is σ = 684828144. Its totient is φ = 193991904.

The previous prime is 389657083. The next prime is 389657087. The reversal of 389657084 is 480756983.

It is a super-2 number, since 2×389657084² = 303665286222766112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389657083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208112 + ... + 209975.

It is an arithmetic number, because the mean of its divisors is an integer number (57069012).

Almost surely, 2^389657084 is an apocalyptic number.

It is an amenable number.

389657084 is a deficient number, since it is larger than the sum of its proper divisors (295171060).

389657084 is a wasteful number, since it uses less digits than its factorization.

389657084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418324 (or 418322 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 389657084 is about 19739.7336354876. The cubic root of 389657084 is about 730.4001584152.

The spelling of 389657084 in words is "three hundred eighty-nine million, six hundred fifty-seven thousand, eighty-four".