258139385 has 8 divisors (see below), whose sum is σ = 354019776. Its totient is φ = 177009840.

The previous prime is 258139381. The next prime is 258139391. The reversal of 258139385 is 583931852.

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

It is not a de Polignac number, because 258139385 - 2² = 258139381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258139381) 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, 3687671 + ... + 3687740.

It is an arithmetic number, because the mean of its divisors is an integer number (44252472).

Almost surely, 2^258139385 is an apocalyptic number.

It is an amenable number.

258139385 is a deficient number, since it is larger than the sum of its proper divisors (95880391).

258139385 is an equidigital number, since it uses as much as digits as its factorization.

258139385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7375423.

The product of its digits is 259200, while the sum is 44.

The square root of 258139385 is about 16066.7166838779. The cubic root of 258139385 is about 636.7242986062.

The spelling of 258139385 in words is "two hundred fifty-eight million, one hundred thirty-nine thousand, three hundred eighty-five".