389066368 has 64 divisors (see below), whose sum is σ = 811952640. Its totient is φ = 185472000.

The previous prime is 389066347. The next prime is 389066371. The reversal of 389066368 is 863660983.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×389066368² = 302745277417422848, which contains 22 as substring.

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, 281038 + ... + 282418.

It is an arithmetic number, because the mean of its divisors is an integer number (12686760).

Almost surely, 2^389066368 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 389066368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405976320).

389066368 is an abundant number, since it is smaller than the sum of its proper divisors (422886272).

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

389066368 is a wasteful number, since it uses less digits than its factorization.

389066368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 389066368 is about 19724.7653471467. The cubic root of 389066368 is about 730.0308787839.

The spelling of 389066368 in words is "three hundred eighty-nine million, sixty-six thousand, three hundred sixty-eight".