258449923 has 4 divisors (see below), whose sum is σ = 258616008. Its totient is φ = 258283840.

The previous prime is 258449911. The next prime is 258449927. The reversal of 258449923 is 329944852.

258449923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 258449923 - 2²¹ = 256352771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258449927) 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, 80686 + ... + 83827.

It is an arithmetic number, because the mean of its divisors is an integer number (64654002).

Almost surely, 2^258449923 is an apocalyptic number.

258449923 is a deficient number, since it is larger than the sum of its proper divisors (166085).

258449923 is a wasteful number, since it uses less digits than its factorization.

258449923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166084.

The product of its digits is 622080, while the sum is 46.

The square root of 258449923 is about 16076.3777947646. The cubic root of 258449923 is about 636.9795197090.

The spelling of 258449923 in words is "two hundred fifty-eight million, four hundred forty-nine thousand, nine hundred twenty-three".