22406369 has 2 divisors, whose sum is σ = 22406370. Its totient is φ = 22406368.

The previous prime is 22406359. The next prime is 22406381. The reversal of 22406369 is 96360422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21977344 + 429025 = 4688^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 22406369 - 2¹⁶ = 22340833 is a prime.

It is a super-2 number, since 2×22406369² = 1004090743528322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22406309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11203184 + 11203185.

It is an arithmetic number, because the mean of its divisors is an integer number (11203185).

Almost surely, 2^22406369 is an apocalyptic number.

It is an amenable number.

22406369 is a deficient number, since it is larger than the sum of its proper divisors (1).

22406369 is an equidigital number, since it uses as much as digits as its factorization.

22406369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 22406369 is about 4733.5366270897. The cubic root of 22406369 is about 281.9186635637.

The spelling of 22406369 in words is "twenty-two million, four hundred six thousand, three hundred sixty-nine".