389500988 has 36 divisors (see below), whose sum is σ = 741532680. Its totient is φ = 178515360.

The previous prime is 389500987. The next prime is 389501011. The reversal of 389500988 is 889005983.

It is a super-2 number, since 2×389500988² = 303422039305952288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389500987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70370 + ... + 75702.

It is an arithmetic number, because the mean of its divisors is an integer number (20598130).

Almost surely, 2^389500988 is an apocalyptic number.

389500988 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

389500988 is a deficient number, since it is larger than the sum of its proper divisors (352031692).

389500988 is a wasteful number, since it uses less digits than its factorization.

389500988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418 (or 5385 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 389500988 is about 19735.7793866875. The cubic root of 389500988 is about 730.3026130130.

The spelling of 389500988 in words is "three hundred eighty-nine million, five hundred thousand, nine hundred eighty-eight".