389666502 has 12 divisors (see below), whose sum is σ = 844277460. Its totient is φ = 129888828.

The previous prime is 389666489. The next prime is 389666513. The reversal of 389666502 is 205666983.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10824052 + ... + 10824087.

It is an arithmetic number, because the mean of its divisors is an integer number (70356455).

Almost surely, 2^389666502 is an apocalyptic number.

389666502 is an abundant number, since it is smaller than the sum of its proper divisors (454610958).

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

389666502 is a wasteful number, since it uses less digits than its factorization.

389666502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21648147 (or 21648144 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 389666502 is about 19739.9721884303. The cubic root of 389666502 is about 730.4060429510.

The spelling of 389666502 in words is "three hundred eighty-nine million, six hundred sixty-six thousand, five hundred two".