22429999 has 2 divisors, whose sum is σ = 22430000. Its totient is φ = 22429998.

The previous prime is 22429949. The next prime is 22430041. The reversal of 22429999 is 99992422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22429999 - 2¹⁵ = 22397231 is a prime.

22429999 is a modest number, since divided by 9999 gives 2242 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22429909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214999 + 11215000.

It is an arithmetic number, because the mean of its divisors is an integer number (11215000).

Almost surely, 2^22429999 is an apocalyptic number.

22429999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22429999 is an equidigital number, since it uses as much as digits as its factorization.

22429999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 22429999 is about 4736.0319889122. The cubic root of 22429999 is about 282.0177335729.

The spelling of 22429999 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred ninety-nine".