90016923 has 16 divisors (see below), whose sum is σ = 121233920. Its totient is φ = 59409504.

The previous prime is 90016919. The next prime is 90016951. The reversal of 90016923 is 32961009.

It is not a de Polignac number, because 90016923 - 2² = 90016919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90016723) 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, 194190 + ... + 194652.

It is an arithmetic number, because the mean of its divisors is an integer number (7577120).

Almost surely, 2^90016923 is an apocalyptic number.

90016923 is a deficient number, since it is larger than the sum of its proper divisors (31216997).

90016923 is a wasteful number, since it uses less digits than its factorization.

90016923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90016923 is about 9487.7248589954. The cubic root of 90016923 is about 448.1685613445.

The spelling of 90016923 in words is "ninety million, sixteen thousand, nine hundred twenty-three".