90969 has 4 divisors (see below), whose sum is σ = 121296. Its totient is φ = 60644.

The previous prime is 90947. The next prime is 90971. The reversal of 90969 is 96909.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96909 = 3 ⋅32303.

It is a cyclic number.

It is not a de Polignac number, because 90969 - 2⁷ = 90841 is a prime.

It is a super-2 number, since 2×90969² = 16550717922, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 12.

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, 15159 + ... + 15164.

It is an arithmetic number, because the mean of its divisors is an integer number (30324).

2⁹⁰⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

90969 is a deficient number, since it is larger than the sum of its proper divisors (30327).

90969 is a wasteful number, since it uses less digits than its factorization.

90969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30326.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 90969 is about 301.6106762036. The cubic root of 90969 is about 44.9743063201.

The spelling of 90969 in words is "ninety thousand, nine hundred sixty-nine".