90530823 has 16 divisors (see below), whose sum is σ = 124246016. Its totient is φ = 58592160.

The previous prime is 90530809. The next prime is 90530827. The reversal of 90530823 is 32803509.

It is a happy number.

It is not a de Polignac number, because 90530823 - 2⁸ = 90530567 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 (90530827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90858 + ... + 91848.

It is an arithmetic number, because the mean of its divisors is an integer number (7765376).

Almost surely, 2^90530823 is an apocalyptic number.

90530823 is a deficient number, since it is larger than the sum of its proper divisors (33715193).

90530823 is a wasteful number, since it uses less digits than its factorization.

90530823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 90530823 is about 9514.7686782181. The cubic root of 90530823 is about 449.0197973093.

The spelling of 90530823 in words is "ninety million, five hundred thirty thousand, eight hundred twenty-three".