389902331 has 8 divisors (see below), whose sum is σ = 479879904. Its totient is φ = 308494080.

The previous prime is 389902321. The next prime is 389902339. The reversal of 389902331 is 133209983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389902331 is a prime.

It is a super-3 number, since 3×389902331³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (389902339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2142230 + ... + 2142411.

It is an arithmetic number, because the mean of its divisors is an integer number (59984988).

Almost surely, 2^389902331 is an apocalyptic number.

389902331 is a deficient number, since it is larger than the sum of its proper divisors (89977573).

389902331 is a wasteful number, since it uses less digits than its factorization.

389902331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284661.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 389902331 is about 19745.9446722612. The cubic root of 389902331 is about 730.5533622513.

The spelling of 389902331 in words is "three hundred eighty-nine million, nine hundred two thousand, three hundred thirty-one".