90489263 has 4 divisors (see below), whose sum is σ = 91422240. Its totient is φ = 89556288.

The previous prime is 90489253. The next prime is 90489277. The reversal of 90489263 is 36298409.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36298409 = 7 ⋅5185487.

It is a cyclic number.

It is not a de Polignac number, because 90489263 - 2⁴ = 90489247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90489263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90489253) 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, 466343 + ... + 466536.

It is an arithmetic number, because the mean of its divisors is an integer number (22855560).

Almost surely, 2^90489263 is an apocalyptic number.

90489263 is a deficient number, since it is larger than the sum of its proper divisors (932977).

90489263 is an equidigital number, since it uses as much as digits as its factorization.

90489263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932976.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 90489263 is about 9512.5844542900. The cubic root of 90489263 is about 448.9510762612.

The spelling of 90489263 in words is "ninety million, four hundred eighty-nine thousand, two hundred sixty-three".