258474379 has 4 divisors (see below), whose sum is σ = 259827840. Its totient is φ = 257120920.

The previous prime is 258474353. The next prime is 258474407. The reversal of 258474379 is 973474852.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 258474379 - 2¹⁵ = 258441611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258474319) 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, 676444 + ... + 676825.

It is an arithmetic number, because the mean of its divisors is an integer number (64956960).

Almost surely, 2^258474379 is an apocalyptic number.

258474379 is a deficient number, since it is larger than the sum of its proper divisors (1353461).

258474379 is a wasteful number, since it uses less digits than its factorization.

258474379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353460.

The product of its digits is 1693440, while the sum is 49.

The square root of 258474379 is about 16077.1383958713. The cubic root of 258474379 is about 636.9996106157. Note that the first 3 decimals are identical.

The spelling of 258474379 in words is "two hundred fifty-eight million, four hundred seventy-four thousand, three hundred seventy-nine".