22969 has 4 divisors (see below), whose sum is σ = 23296. Its totient is φ = 22644.

The previous prime is 22963. The next prime is 22973. The reversal of 22969 is 96922.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22969 - 2³ = 22961 is a prime.

It is a super-2 number, since 2×22969² = 1055149922, which contains 22 as substring.

It is a Duffinian number.

22969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (22961) 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, 9 + ... + 214.

It is an arithmetic number, because the mean of its divisors is an integer number (5824).

2²²⁹⁶⁹ is an apocalyptic number.

22969 is the 88-th hex number.

It is an amenable number.

22969 is a deficient number, since it is larger than the sum of its proper divisors (327).

22969 is a wasteful number, since it uses less digits than its factorization.

22969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326.

The product of its digits is 1944, while the sum is 28.

The square root of 22969 is about 151.5552704461. Note that the first 3 decimals coincide. The cubic root of 22969 is about 28.4258872602.

Subtracting from 22969 its product of digits (1944), we obtain a square (21025 = 145²).

The spelling of 22969 in words is "twenty-two thousand, nine hundred sixty-nine".