258208139 has 8 divisors (see below), whose sum is σ = 295223808. Its totient is φ = 221224680.

The previous prime is 258208133. The next prime is 258208193. The reversal of 258208139 is 931802852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258208139 - 2¹² = 258204043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258208133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12704 + ... + 26034.

It is an arithmetic number, because the mean of its divisors is an integer number (36902976).

Almost surely, 2^258208139 is an apocalyptic number.

258208139 is a deficient number, since it is larger than the sum of its proper divisors (37015669).

258208139 is a wasteful number, since it uses less digits than its factorization.

258208139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16105.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 258208139 is about 16068.8561820685. The cubic root of 258208139 is about 636.7808229221.

The spelling of 258208139 in words is "two hundred fifty-eight million, two hundred eight thousand, one hundred thirty-nine".