90919123 has 8 divisors (see below), whose sum is σ = 95968400. Its totient is φ = 85896288.

The previous prime is 90919117. The next prime is 90919141. The reversal of 90919123 is 32191909.

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 90919123 - 2¹³ = 90910931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90919193) 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, 673 + ... + 13501.

It is an arithmetic number, because the mean of its divisors is an integer number (11996050).

Almost surely, 2^90919123 is an apocalyptic number.

90919123 is a deficient number, since it is larger than the sum of its proper divisors (5049277).

90919123 is a wasteful number, since it uses less digits than its factorization.

90919123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 90919123 is about 9535.1519652285. The cubic root of 90919123 is about 449.6608522805.

The spelling of 90919123 in words is "ninety million, nine hundred nineteen thousand, one hundred twenty-three".