90299 has 4 divisors (see below), whose sum is σ = 98520. Its totient is φ = 82080.

The previous prime is 90289. The next prime is 90313. The reversal of 90299 is 99209.

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

It is a cyclic number.

It is not a de Polignac number, because 90299 - 2¹⁶ = 24763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094 + ... + 4115.

It is an arithmetic number, because the mean of its divisors is an integer number (24630).

2⁹⁰²⁹⁹ is an apocalyptic number.

90299 is a deficient number, since it is larger than the sum of its proper divisors (8221).

90299 is a wasteful number, since it uses less digits than its factorization.

90299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 90299 is about 300.4979201259. The cubic root of 90299 is about 44.8636200171.

It can be divided in two parts, 902 and 99, that multiplied together give a palindrome (89298).

The spelling of 90299 in words is "ninety thousand, two hundred ninety-nine".