22369309 has 2 divisors, whose sum is σ = 22369310. Its totient is φ = 22369308.

The previous prime is 22369273. The next prime is 22369343. The reversal of 22369309 is 90396322.

It is an a-pointer prime, because the next prime (22369343) can be obtained adding 22369309 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 2965284 = 4405^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 22369309 - 2⁷ = 22369181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22363309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11184654 + 11184655.

It is an arithmetic number, because the mean of its divisors is an integer number (11184655).

Almost surely, 2^22369309 is an apocalyptic number.

It is an amenable number.

22369309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22369309 is an equidigital number, since it uses as much as digits as its factorization.

22369309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 22369309 is about 4729.6203864581. The cubic root of 22369309 is about 281.7631471980.

The spelling of 22369309 in words is "twenty-two million, three hundred sixty-nine thousand, three hundred nine".