258990047 has 4 divisors (see below), whose sum is σ = 265989816. Its totient is φ = 251990280.

The previous prime is 258990001. The next prime is 258990049. The reversal of 258990047 is 740099852.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 258990047 - 2¹⁰ = 258989023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258990049) 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, 3499829 + ... + 3499902.

It is an arithmetic number, because the mean of its divisors is an integer number (66497454).

Almost surely, 2^258990047 is an apocalyptic number.

258990047 is a deficient number, since it is larger than the sum of its proper divisors (6999769).

258990047 is an equidigital number, since it uses as much as digits as its factorization.

258990047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999768.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 258990047 is about 16093.1677117962. The cubic root of 258990047 is about 637.4229434993.

The spelling of 258990047 in words is "two hundred fifty-eight million, nine hundred ninety thousand, forty-seven".