581424399 has 24 divisors (see below), whose sum is σ = 875871360. Its totient is φ = 385421976.

The previous prime is 581424323. The next prime is 581424413. The reversal of 581424399 is 993424185.

It is not a de Polignac number, because 581424399 - 2²⁰ = 580375823 is a prime.

It is a super-2 number, since 2×581424399² = 676108663505022402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581424299) 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, 36814 + ... + 50180.

It is an arithmetic number, because the mean of its divisors is an integer number (36494640).

Almost surely, 2^581424399 is an apocalyptic number.

581424399 is a deficient number, since it is larger than the sum of its proper divisors (294446961).

581424399 is a wasteful number, since it uses less digits than its factorization.

581424399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561 (or 13549 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 581424399 is about 24112.7434979929. The cubic root of 581424399 is about 834.6372258487.

The spelling of 581424399 in words is "five hundred eighty-one million, four hundred twenty-four thousand, three hundred ninety-nine".