90479 has 4 divisors (see below), whose sum is σ = 91176. Its totient is φ = 89784.

The previous prime is 90473. The next prime is 90481. The reversal of 90479 is 97409.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 90479 - 2¹⁶ = 24943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90473) 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, 89 + ... + 434.

It is an arithmetic number, because the mean of its divisors is an integer number (22794).

2⁹⁰⁴⁷⁹ is an apocalyptic number.

90479 is a deficient number, since it is larger than the sum of its proper divisors (697).

90479 is a wasteful number, since it uses less digits than its factorization.

90479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 90479 is about 300.7972739238. The cubic root of 90479 is about 44.8934102759.

The spelling of 90479 in words is "ninety thousand, four hundred seventy-nine".