22709129 has 2 divisors, whose sum is σ = 22709130. Its totient is φ = 22709128.

The previous prime is 22709107. The next prime is 22709147. The reversal of 22709129 is 92190722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22657600 + 51529 = 4760^2 + 227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22709129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22709095 and 22709104.

It is not a weakly prime, because it can be changed into another prime (22709149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11354564 + 11354565.

It is an arithmetic number, because the mean of its divisors is an integer number (11354565).

Almost surely, 2^22709129 is an apocalyptic number.

It is an amenable number.

22709129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22709129 is an equidigital number, since it uses as much as digits as its factorization.

22709129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 22709129 is about 4765.4096361173. The cubic root of 22709129 is about 283.1827701395.

The spelling of 22709129 in words is "twenty-two million, seven hundred nine thousand, one hundred twenty-nine".