90579223 has 4 divisors (see below), whose sum is σ = 103519120. Its totient is φ = 77639328.

The previous prime is 90579193. The next prime is 90579227. The reversal of 90579223 is 32297509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32297509 = 271 ⋅119179.

It is a cyclic number.

It is not a de Polignac number, because 90579223 - 2²⁵ = 57024791 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 (90579227) 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, 6469938 + ... + 6469951.

It is an arithmetic number, because the mean of its divisors is an integer number (25879780).

Almost surely, 2^90579223 is an apocalyptic number.

90579223 is a deficient number, since it is larger than the sum of its proper divisors (12939897).

90579223 is a wasteful number, since it uses less digits than its factorization.

90579223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939896.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 90579223 is about 9517.3117528008. The cubic root of 90579223 is about 449.0998020550.

The spelling of 90579223 in words is "ninety million, five hundred seventy-nine thousand, two hundred twenty-three".