90258079 has 4 divisors (see below), whose sum is σ = 90779976. Its totient is φ = 89736184.

The previous prime is 90258071. The next prime is 90258089. The reversal of 90258079 is 97085209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97085209 = 13 ⋅7468093.

It is a cyclic number.

It is not a de Polignac number, because 90258079 - 2³ = 90258071 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 (90258071) 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, 260689 + ... + 261034.

It is an arithmetic number, because the mean of its divisors is an integer number (22694994).

Almost surely, 2^90258079 is an apocalyptic number.

90258079 is a deficient number, since it is larger than the sum of its proper divisors (521897).

90258079 is a wasteful number, since it uses less digits than its factorization.

90258079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521896.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 90258079 is about 9500.4252010107. The cubic root of 90258079 is about 448.5684201079.

The spelling of 90258079 in words is "ninety million, two hundred fifty-eight thousand, seventy-nine".