222899009 has 2 divisors, whose sum is σ = 222899010. Its totient is φ = 222899008.

The previous prime is 222898997. The next prime is 222899059. The reversal of 222899009 is 900998222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141538609 + 81360400 = 11897^2 + 9020^2 .

It is a cyclic number.

It is not a de Polignac number, because 222899009 - 2⁴ = 222898993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (222899059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111449504 + 111449505.

It is an arithmetic number, because the mean of its divisors is an integer number (111449505).

Almost surely, 2^222899009 is an apocalyptic number.

It is an amenable number.

222899009 is a deficient number, since it is larger than the sum of its proper divisors (1).

222899009 is an equidigital number, since it uses as much as digits as its factorization.

222899009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 222899009 is about 14929.8027113556. The cubic root of 222899009 is about 606.3211426910.

The spelling of 222899009 in words is "two hundred twenty-two million, eight hundred ninety-nine thousand, nine".