22424429 has 2 divisors, whose sum is σ = 22424430. Its totient is φ = 22424428.

The previous prime is 22424383. The next prime is 22424489. The reversal of 22424429 is 92442422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 51529 = 4730^2 + 227^2 .

It is a cyclic number.

It is not a de Polignac number, because 22424429 - 2²⁰ = 21375853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22424489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212214 + 11212215.

It is an arithmetic number, because the mean of its divisors is an integer number (11212215).

Almost surely, 2^22424429 is an apocalyptic number.

It is an amenable number.

22424429 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424429 is an equidigital number, since it uses as much as digits as its factorization.

22424429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 29.

The square root of 22424429 is about 4735.4439073861. The cubic root of 22424429 is about 281.9943873269.

The spelling of 22424429 in words is "twenty-two million, four hundred twenty-four thousand, four hundred twenty-nine".