22429 has 4 divisors (see below), whose sum is σ = 24480. Its totient is φ = 20380.

The previous prime is 22409. The next prime is 22433. The reversal of 22429 is 92422.

It is a happy number.

22429 is nontrivially palindromic in base 8.

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.

It is a cyclic number.

It is not a de Polignac number, because 22429 - 2⁵ = 22397 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22409) 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, 1009 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (6120).

2²²⁴²⁹ is an apocalyptic number.

It is an amenable number.

22429 is a deficient number, since it is larger than the sum of its proper divisors (2051).

22429 is a wasteful number, since it uses less digits than its factorization.

22429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050.

The product of its digits is 288, while the sum is 19.

The square root of 22429 is about 149.7631463345. The cubic root of 22429 is about 28.2013546622.

It can be divided in two parts, 224 and 29, that added together give a triangular number (253 = T₂₂).

The spelling of 22429 in words is "twenty-two thousand, four hundred twenty-nine".