22641929 has 2 divisors, whose sum is σ = 22641930. Its totient is φ = 22641928.

The previous prime is 22641907. The next prime is 22641937. The reversal of 22641929 is 92914622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11916304 + 10725625 = 3452^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 22641929 - 2¹² = 22637833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22641979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11320964 + 11320965.

It is an arithmetic number, because the mean of its divisors is an integer number (11320965).

Almost surely, 2^22641929 is an apocalyptic number.

It is an amenable number.

22641929 is a deficient number, since it is larger than the sum of its proper divisors (1).

22641929 is an equidigital number, since it uses as much as digits as its factorization.

22641929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 22641929 is about 4758.3536018249. The cubic root of 22641929 is about 282.9031662277.

The spelling of 22641929 in words is "twenty-two million, six hundred forty-one thousand, nine hundred twenty-nine".