258445849 has 12 divisors (see below), whose sum is σ = 276523956. Its totient is φ = 240713472.

The previous prime is 258445843. The next prime is 258445879. The reversal of 258445849 is 948544852.

It can be written as a sum of positive squares in 2 ways, for example, as 207936400 + 50509449 = 14420^2 + 7107^2 .

It is not a de Polignac number, because 258445849 - 2³ = 258445841 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 (258445841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179637 + ... + 181069.

It is an arithmetic number, because the mean of its divisors is an integer number (23043663).

Almost surely, 2^258445849 is an apocalyptic number.

It is an amenable number.

258445849 is a deficient number, since it is larger than the sum of its proper divisors (18078107).

258445849 is a wasteful number, since it uses less digits than its factorization.

258445849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1553 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 49.

The square root of 258445849 is about 16076.2510866184. The cubic root of 258445849 is about 636.9761727445.

The spelling of 258445849 in words is "two hundred fifty-eight million, four hundred forty-five thousand, eight hundred forty-nine".