226220009 has 2 divisors, whose sum is σ = 226220010. Its totient is φ = 226220008.

The previous prime is 226219999. The next prime is 226220041. The reversal of 226220009 is 900022622.

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., 224160784 + 2059225 = 14972^2 + 1435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226220009 is a prime.

It is not a weakly prime, because it can be changed into another prime (226220089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113110004 + 113110005.

It is an arithmetic number, because the mean of its divisors is an integer number (113110005).

Almost surely, 2^226220009 is an apocalyptic number.

It is an amenable number.

226220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

226220009 is an equidigital number, since it uses as much as digits as its factorization.

226220009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 226220009 is about 15040.6119888786. The cubic root of 226220009 is about 609.3175284094.

The spelling of 226220009 in words is "two hundred twenty-six million, two hundred twenty thousand, nine".