222436609 has 2 divisors, whose sum is σ = 222436610. Its totient is φ = 222436608.

The previous prime is 222436579. The next prime is 222436633. The reversal of 222436609 is 906634222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122036209 + 100400400 = 11047^2 + 10020^2 .

It is a cyclic number.

It is not a de Polignac number, because 222436609 - 2⁷ = 222436481 is a prime.

It is not a weakly prime, because it can be changed into another prime (222436679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111218304 + 111218305.

It is an arithmetic number, because the mean of its divisors is an integer number (111218305).

Almost surely, 2^222436609 is an apocalyptic number.

It is an amenable number.

222436609 is a deficient number, since it is larger than the sum of its proper divisors (1).

222436609 is an equidigital number, since it uses as much as digits as its factorization.

222436609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 222436609 is about 14914.3088676613. The cubic root of 222436609 is about 605.9015849868.

The spelling of 222436609 in words is "two hundred twenty-two million, four hundred thirty-six thousand, six hundred nine".