258739 has 6 divisors (see below), whose sum is σ = 280356. Its totient is φ = 238680.

The previous prime is 258737. The next prime is 258743. The reversal of 258739 is 937852.

It is not a de Polignac number, because 258739 - 2¹ = 258737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 597 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (46726).

2²⁵⁸⁷³⁹ is an apocalyptic number.

258739 is a deficient number, since it is larger than the sum of its proper divisors (21617).

258739 is a wasteful number, since it uses less digits than its factorization.

258739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557 (or 1544 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 258739 is about 508.6639362094. The cubic root of 258739 is about 63.7216919043.

The spelling of 258739 in words is "two hundred fifty-eight thousand, seven hundred thirty-nine".