90236799 has 12 divisors (see below), whose sum is σ = 138009456. Its totient is φ = 56619072.

The previous prime is 90236791. The next prime is 90236801. The reversal of 90236799 is 99763209.

It is not a de Polignac number, because 90236799 - 2³ = 90236791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90236791) 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 11 ways as a sum of consecutive naturals, for example, 294739 + ... + 295044.

It is an arithmetic number, because the mean of its divisors is an integer number (11500788).

Almost surely, 2^90236799 is an apocalyptic number.

90236799 is a deficient number, since it is larger than the sum of its proper divisors (47772657).

90236799 is a wasteful number, since it uses less digits than its factorization.

90236799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589806 (or 589803 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 90236799 is about 9499.3051851175. The cubic root of 90236799 is about 448.5331645889.

The spelling of 90236799 in words is "ninety million, two hundred thirty-six thousand, seven hundred ninety-nine".