320362989 has 8 divisors (see below), whose sum is σ = 430411872. Its totient is φ = 211944720.

The previous prime is 320362937. The next prime is 320362993. The reversal of 320362989 is 989263023.

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

It is not a de Polignac number, because 320362989 - 2²¹ = 318265837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320362989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320362489) 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, 407194 + ... + 407979.

It is an arithmetic number, because the mean of its divisors is an integer number (53801484).

Almost surely, 2^320362989 is an apocalyptic number.

It is an amenable number.

320362989 is a deficient number, since it is larger than the sum of its proper divisors (110048883).

320362989 is a wasteful number, since it uses less digits than its factorization.

320362989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815307.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 320362989 is about 17898.6867954049. The cubic root of 320362989 is about 684.2489069668.

The spelling of 320362989 in words is "three hundred twenty million, three hundred sixty-two thousand, nine hundred eighty-nine".