258438729 has 16 divisors (see below), whose sum is σ = 353441792. Its totient is φ = 167883408.

The previous prime is 258438727. The next prime is 258438731. The reversal of 258438729 is 927834852.

It is an interprime number because it is at equal distance from previous prime (258438727) and next prime (258438731).

It is not a de Polignac number, because 258438729 - 2¹ = 258438727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258438721) 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 15 ways as a sum of consecutive naturals, for example, 57564 + ... + 61890.

It is an arithmetic number, because the mean of its divisors is an integer number (22090112).

Almost surely, 2^258438729 is an apocalyptic number.

It is an amenable number.

258438729 is a deficient number, since it is larger than the sum of its proper divisors (95003063).

258438729 is a wasteful number, since it uses less digits than its factorization.

258438729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836.

The product of its digits is 967680, while the sum is 48.

The square root of 258438729 is about 16076.0296404305. The cubic root of 258438729 is about 636.9703232767.

The spelling of 258438729 in words is "two hundred fifty-eight million, four hundred thirty-eight thousand, seven hundred twenty-nine".