90923 has 8 divisors (see below), whose sum is σ = 107520. Its totient is φ = 75240.

The previous prime is 90917. The next prime is 90931. The reversal of 90923 is 32909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90923 - 2⁴ = 90907 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (90023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8 + ... + 426.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2⁹⁰⁹²³ is an apocalyptic number.

90923 is a deficient number, since it is larger than the sum of its proper divisors (16597).

90923 is a wasteful number, since it uses less digits than its factorization.

90923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 90923 is about 301.5344093134. The cubic root of 90923 is about 44.9667243713.

The spelling of 90923 in words is "ninety thousand, nine hundred twenty-three".