220597389 has 24 divisors (see below), whose sum is σ = 338038272. Its totient is φ = 138145920.

The previous prime is 220597387. The next prime is 220597397. The reversal of 220597389 is 983795022.

220597389 is a `hidden beast` number, since 2 + 20 + 597 + 38 + 9 = 666.

It is not a de Polignac number, because 220597389 - 2¹ = 220597387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220597381) 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, 103444 + ... + 105554.

It is an arithmetic number, because the mean of its divisors is an integer number (14084928).

Almost surely, 2^220597389 is an apocalyptic number.

It is an amenable number.

220597389 is a deficient number, since it is larger than the sum of its proper divisors (117440883).

220597389 is a wasteful number, since it uses less digits than its factorization.

220597389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 220597389 is about 14852.5213011125. The cubic root of 220597389 is about 604.2269926244.

The spelling of 220597389 in words is "two hundred twenty million, five hundred ninety-seven thousand, three hundred eighty-nine".