389641308 has 24 divisors (see below), whose sum is σ = 1039043712. Its totient is φ = 111326064.

The previous prime is 389641297. The next prime is 389641313. The reversal of 389641308 is 803146983.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 389641308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319210 + ... + 2319377.

It is an arithmetic number, because the mean of its divisors is an integer number (43293488).

Almost surely, 2^389641308 is an apocalyptic number.

It is an amenable number.

389641308 is an abundant number, since it is smaller than the sum of its proper divisors (649402404).

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

389641308 is a wasteful number, since it uses less digits than its factorization.

389641308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638601 (or 4638599 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 389641308 is about 19739.3340313193. The cubic root of 389641308 is about 730.3903010740.

The spelling of 389641308 in words is "three hundred eighty-nine million, six hundred forty-one thousand, three hundred eight".