90229 has 4 divisors (see below), whose sum is σ = 94176. Its totient is φ = 86284.

The previous prime is 90227. The next prime is 90239. The reversal of 90229 is 92209.

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 a cyclic number.

It is not a de Polignac number, because 90229 - 2¹ = 90227 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

90229 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90227) 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, 1939 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (23544).

2⁹⁰²²⁹ is an apocalyptic number.

It is an amenable number.

90229 is a deficient number, since it is larger than the sum of its proper divisors (3947).

90229 is a wasteful number, since it uses less digits than its factorization.

90229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 90229 is about 300.3814241926. The cubic root of 90229 is about 44.8520242252.

The spelling of 90229 in words is "ninety thousand, two hundred twenty-nine".