90123089 has 8 divisors (see below), whose sum is σ = 103281408. Its totient is φ = 77035680.

The previous prime is 90123073. The next prime is 90123109. The reversal of 90123089 is 98032109.

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 90123089 - 2⁴ = 90123073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90123689) 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, 14972 + ... + 20109.

It is an arithmetic number, because the mean of its divisors is an integer number (12910176).

Almost surely, 2^90123089 is an apocalyptic number.

It is an amenable number.

90123089 is a deficient number, since it is larger than the sum of its proper divisors (13158319).

90123089 is a wasteful number, since it uses less digits than its factorization.

90123089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35455.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 90123089 is about 9493.3181238174. The cubic root of 90123089 is about 448.3446821921.

The spelling of 90123089 in words is "ninety million, one hundred twenty-three thousand, eighty-nine".