90269 has 4 divisors (see below), whose sum is σ = 95040. Its totient is φ = 85500.

The previous prime is 90263. The next prime is 90271. The reversal of 90269 is 96209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 90269 - 2¹⁶ = 24733 is a prime.

It is a super-2 number, since 2×90269² = 16296984722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90263) 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, 2357 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2⁹⁰²⁶⁹ is an apocalyptic number.

It is an amenable number.

90269 is a deficient number, since it is larger than the sum of its proper divisors (4771).

90269 is a wasteful number, since it uses less digits than its factorization.

90269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90269 is about 300.4479988284. The cubic root of 90269 is about 44.8586511261.

The spelling of 90269 in words is "ninety thousand, two hundred sixty-nine".