389002491 has 24 divisors (see below), whose sum is σ = 588304080. Its totient is φ = 247361856.

The previous prime is 389002489. The next prime is 389002499. The reversal of 389002491 is 194200983.

It is not a de Polignac number, because 389002491 - 2¹ = 389002489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389002499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12685 + ... + 30641.

It is an arithmetic number, because the mean of its divisors is an integer number (24512670).

Almost surely, 2^389002491 is an apocalyptic number.

389002491 is a deficient number, since it is larger than the sum of its proper divisors (199301589).

389002491 is a wasteful number, since it uses less digits than its factorization.

389002491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18075 (or 18072 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 389002491 is about 19723.1460725717. The cubic root of 389002491 is about 729.9909243883.

The spelling of 389002491 in words is "three hundred eighty-nine million, two thousand, four hundred ninety-one".