258954989 has 4 divisors (see below), whose sum is σ = 259573440. Its totient is φ = 258336540.

The previous prime is 258954977. The next prime is 258955013. The reversal of 258954989 is 989459852.

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 258954989 - 2¹² = 258950893 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 (258954929) 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, 308597 + ... + 309434.

It is an arithmetic number, because the mean of its divisors is an integer number (64893360).

Almost surely, 2^258954989 is an apocalyptic number.

It is an amenable number.

258954989 is a deficient number, since it is larger than the sum of its proper divisors (618451).

258954989 is an equidigital number, since it uses as much as digits as its factorization.

258954989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618450.

The product of its digits is 9331200, while the sum is 59.

The square root of 258954989 is about 16092.0784549417. The cubic root of 258954989 is about 637.3941807699.

The spelling of 258954989 in words is "two hundred fifty-eight million, nine hundred fifty-four thousand, nine hundred eighty-nine".