22046309 has 2 divisors, whose sum is σ = 22046310. Its totient is φ = 22046308.

The previous prime is 22046303. The next prime is 22046329. The reversal of 22046309 is 90364022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11710084 + 10336225 = 3422^2 + 3215^2 .

It is a cyclic number.

It is not a de Polignac number, because 22046309 - 2¹² = 22042213 is a prime.

It is equal to p_1392047 and since 22046309 and 1392047 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22046303) 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, 11023154 + 11023155.

It is an arithmetic number, because the mean of its divisors is an integer number (11023155).

Almost surely, 2^22046309 is an apocalyptic number.

It is an amenable number.

22046309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22046309 is an equidigital number, since it uses as much as digits as its factorization.

22046309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22046309 is about 4695.3497207343. The cubic root of 22046309 is about 280.4004007923.

The spelling of 22046309 in words is "twenty-two million, forty-six thousand, three hundred nine".