226912909 has 2 divisors, whose sum is σ = 226912910. Its totient is φ = 226912908.

The previous prime is 226912891. The next prime is 226912921. The reversal of 226912909 is 909219622.

226912909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219128809 + 7784100 = 14803^2 + 2790^2 .

It is a cyclic number.

It is not a de Polignac number, because 226912909 - 2¹⁵ = 226880141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226912949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113456454 + 113456455.

It is an arithmetic number, because the mean of its divisors is an integer number (113456455).

Almost surely, 2^226912909 is an apocalyptic number.

It is an amenable number.

226912909 is a deficient number, since it is larger than the sum of its proper divisors (1).

226912909 is an equidigital number, since it uses as much as digits as its factorization.

226912909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 226912909 is about 15063.6286797040. The cubic root of 226912909 is about 609.9389968558.

It can be divided in two parts, 22691 and 2909, that added together give a square (25600 = 160²).

The spelling of 226912909 in words is "two hundred twenty-six million, nine hundred twelve thousand, nine hundred nine".