90117083 has 4 divisors (see below), whose sum is σ = 102990960. Its totient is φ = 77243208.

The previous prime is 90117073. The next prime is 90117091. The reversal of 90117083 is 38071109.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-90117083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90117023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6436928 + ... + 6436941.

It is an arithmetic number, because the mean of its divisors is an integer number (25747740).

Almost surely, 2^90117083 is an apocalyptic number.

90117083 is a deficient number, since it is larger than the sum of its proper divisors (12873877).

90117083 is a wasteful number, since it uses less digits than its factorization.

90117083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12873876.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 90117083 is about 9493.0017907930. The cubic root of 90117083 is about 448.3347224137.

The spelling of 90117083 in words is "ninety million, one hundred seventeen thousand, eighty-three".