22866409 has 2 divisors, whose sum is σ = 22866410. Its totient is φ = 22866408.

The previous prime is 22866401. The next prime is 22866419. The reversal of 22866409 is 90466822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 6906384 = 3995^2 + 2628^2 .

It is a cyclic number.

It is not a de Polignac number, because 22866409 - 2³ = 22866401 is a prime.

It is a super-3 number, since 3×22866409³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22866401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11433204 + 11433205.

It is an arithmetic number, because the mean of its divisors is an integer number (11433205).

Almost surely, 2^22866409 is an apocalyptic number.

It is an amenable number.

22866409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22866409 is an equidigital number, since it uses as much as digits as its factorization.

22866409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 22866409 is about 4781.8834155592. The cubic root of 22866409 is about 283.8350270134.

The spelling of 22866409 in words is "twenty-two million, eight hundred sixty-six thousand, four hundred nine".