258000409 has 4 divisors (see below), whose sum is σ = 260899380. Its totient is φ = 255101440.

The previous prime is 258000403. The next prime is 258000481. The reversal of 258000409 is 904000852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68112009 + 189888400 = 8253^2 + 13780^2 .

It is a cyclic number.

It is not a de Polignac number, because 258000409 - 2⁵ = 258000377 is a prime.

It is a super-2 number, since 2×258000409² = 133128422088334562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258000403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449352 + ... + 1449529.

It is an arithmetic number, because the mean of its divisors is an integer number (65224845).

Almost surely, 2^258000409 is an apocalyptic number.

It is an amenable number.

258000409 is a deficient number, since it is larger than the sum of its proper divisors (2898971).

258000409 is an equidigital number, since it uses as much as digits as its factorization.

258000409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898970.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 258000409 is about 16062.3911358179. The cubic root of 258000409 is about 636.6100124412.

The spelling of 258000409 in words is "two hundred fifty-eight million, four hundred nine", and thus it is an aban number.