258891441 has 4 divisors (see below), whose sum is σ = 345188592. Its totient is φ = 172594292.

The previous prime is 258891431. The next prime is 258891443. The reversal of 258891441 is 144198852.

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 258891441 - 2⁷ = 258891313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 258891393 and 258891402.

It is not an unprimeable number, because it can be changed into a prime (258891443) 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, 43148571 + ... + 43148576.

It is an arithmetic number, because the mean of its divisors is an integer number (86297148).

Almost surely, 2^258891441 is an apocalyptic number.

It is an amenable number.

258891441 is a deficient number, since it is larger than the sum of its proper divisors (86297151).

258891441 is an equidigital number, since it uses as much as digits as its factorization.

258891441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86297150.

The product of its digits is 92160, while the sum is 42.

The square root of 258891441 is about 16090.1038219149. The cubic root of 258891441 is about 637.3420372946.

The spelling of 258891441 in words is "two hundred fifty-eight million, eight hundred ninety-one thousand, four hundred forty-one".