258430009 has 4 divisors (see below), whose sum is σ = 258586704. Its totient is φ = 258273316.

The previous prime is 258429943. The next prime is 258430031. The reversal of 258430009 is 900034852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258430009 - 2⁷ = 258429881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258430069) 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, 75847 + ... + 79180.

It is an arithmetic number, because the mean of its divisors is an integer number (64646676).

Almost surely, 2^258430009 is an apocalyptic number.

It is an amenable number.

258430009 is a deficient number, since it is larger than the sum of its proper divisors (156695).

258430009 is a wasteful number, since it uses less digits than its factorization.

258430009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156694.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 258430009 is about 16075.7584268986. The cubic root of 258430009 is about 636.9631591754.

The spelling of 258430009 in words is "two hundred fifty-eight million, four hundred thirty thousand, nine".