22469309 has 2 divisors, whose sum is σ = 22469310. Its totient is φ = 22469308.

The previous prime is 22469303. The next prime is 22469341. The reversal of 22469309 is 90396422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17825284 + 4644025 = 4222^2 + 2155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22469309 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 (22469303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11234654 + 11234655.

It is an arithmetic number, because the mean of its divisors is an integer number (11234655).

Almost surely, 2^22469309 is an apocalyptic number.

It is an amenable number.

22469309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22469309 is an equidigital number, since it uses as much as digits as its factorization.

22469309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 22469309 is about 4740.1802708336. The cubic root of 22469309 is about 282.1823887597.

The spelling of 22469309 in words is "twenty-two million, four hundred sixty-nine thousand, three hundred nine".