389657088 has 160 divisors (see below), whose sum is σ = 1172603520. Its totient is φ = 127733760.

The previous prime is 389657087. The next prime is 389657117. The reversal of 389657088 is 880756983.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 981306 + ... + 981702.

It is an arithmetic number, because the mean of its divisors is an integer number (7328772).

Almost surely, 2^389657088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389657088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586301760).

389657088 is an abundant number, since it is smaller than the sum of its proper divisors (782946432).

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

389657088 is an equidigital number, since it uses as much as digits as its factorization.

389657088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 389657088 is about 19739.7337368061. The cubic root of 389657088 is about 730.4001609145.

The spelling of 389657088 in words is "three hundred eighty-nine million, six hundred fifty-seven thousand, eighty-eight".