320589397 has 8 divisors (see below), whose sum is σ = 328306176. Its totient is φ = 312910032.

The previous prime is 320589389. The next prime is 320589419. The reversal of 320589397 is 793985023.

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

It is a cyclic number.

It is not a de Polignac number, because 320589397 - 2³ = 320589389 is a prime.

It is a super-2 number, since 2×320589397² = 205555122937647218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320589307) 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, 8388 + ... + 26674.

It is an arithmetic number, because the mean of its divisors is an integer number (41038272).

Almost surely, 2^320589397 is an apocalyptic number.

It is an amenable number.

320589397 is a deficient number, since it is larger than the sum of its proper divisors (7716779).

320589397 is a wasteful number, since it uses less digits than its factorization.

320589397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18707.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 320589397 is about 17905.0103881567. The cubic root of 320589397 is about 684.4100605656.

The spelling of 320589397 in words is "three hundred twenty million, five hundred eighty-nine thousand, three hundred ninety-seven".