90799 has 8 divisors (see below), whose sum is σ = 97920. Its totient is φ = 84000.

The previous prime is 90793. The next prime is 90803. The reversal of 90799 is 99709.

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 90799 - 2¹⁵ = 58031 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90793) 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, 849 + ... + 949.

It is an arithmetic number, because the mean of its divisors is an integer number (12240).

2⁹⁰⁷⁹⁹ is an apocalyptic number.

90799 is a deficient number, since it is larger than the sum of its proper divisors (7121).

90799 is a wasteful number, since it uses less digits than its factorization.

90799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 90799 is about 301.3287241535. The cubic root of 90799 is about 44.9462733284.

The spelling of 90799 in words is "ninety thousand, seven hundred ninety-nine".