258831469 has 4 divisors (see below), whose sum is σ = 278741596. Its totient is φ = 238921344.

The previous prime is 258831439. The next prime is 258831487. The reversal of 258831469 is 964138852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101002500 + 157828969 = 10050^2 + 12563^2 .

It is a cyclic number.

It is not a de Polignac number, because 258831469 - 2⁵ = 258831437 is a prime.

It is a super-2 number, since 2×258831469² = 133987458689395922, 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 (258831439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9955044 + ... + 9955069.

It is an arithmetic number, because the mean of its divisors is an integer number (69685399).

Almost surely, 2^258831469 is an apocalyptic number.

It is an amenable number.

258831469 is a deficient number, since it is larger than the sum of its proper divisors (19910127).

258831469 is a wasteful number, since it uses less digits than its factorization.

258831469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19910126.

The product of its digits is 414720, while the sum is 46.

The square root of 258831469 is about 16088.2400839868. The cubic root of 258831469 is about 637.2928202325.

The spelling of 258831469 in words is "two hundred fifty-eight million, eight hundred thirty-one thousand, four hundred sixty-nine".