90959 has 4 divisors (see below), whose sum is σ = 99240. Its totient is φ = 82680.

The previous prime is 90947. The next prime is 90971. The reversal of 90959 is 95909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95909 = 11 ⋅8719.

It is an interprime number because it is at equal distance from previous prime (90947) and next prime (90971).

It is a cyclic number.

It is not a de Polignac number, because 90959 - 2⁸ = 90703 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 90959.

It is not an unprimeable number, because it can be changed into a prime (90989) 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, 4124 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (24810).

2⁹⁰⁹⁵⁹ is an apocalyptic number.

90959 is a deficient number, since it is larger than the sum of its proper divisors (8281).

90959 is a wasteful number, since it uses less digits than its factorization.

90959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 90959 is about 301.5940980855. The cubic root of 90959 is about 44.9726582878.

Subtracting 90959 from its reverse (95909), we obtain a triangular number (4950 = T₉₉).

The spelling of 90959 in words is "ninety thousand, nine hundred fifty-nine".