258898879 has 16 divisors (see below), whose sum is σ = 281041920. Its totient is φ = 237837600.

The previous prime is 258898859. The next prime is 258898891. The reversal of 258898879 is 978898852.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258898879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258898879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258898819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65304 + ... + 69154.

It is an arithmetic number, because the mean of its divisors is an integer number (17565120).

Almost surely, 2^258898879 is an apocalyptic number.

258898879 is a deficient number, since it is larger than the sum of its proper divisors (22143041).

258898879 is a wasteful number, since it uses less digits than its factorization.

258898879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990.

The product of its digits is 23224320, while the sum is 64.

The square root of 258898879 is about 16090.3349561157. The cubic root of 258898879 is about 637.3481408886.

The spelling of 258898879 in words is "two hundred fifty-eight million, eight hundred ninety-eight thousand, eight hundred seventy-nine".