226192409 has 2 divisors, whose sum is σ = 226192410. Its totient is φ = 226192408.

The previous prime is 226192403. The next prime is 226192411. The reversal of 226192409 is 904291622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167133184 + 59059225 = 12928^2 + 7685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226192409 is a prime.

It is a Sophie Germain prime.

Together with 226192411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (226192403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113096204 + 113096205.

It is an arithmetic number, because the mean of its divisors is an integer number (113096205).

Almost surely, 2^226192409 is an apocalyptic number.

It is an amenable number.

226192409 is a deficient number, since it is larger than the sum of its proper divisors (1).

226192409 is an equidigital number, since it uses as much as digits as its factorization.

226192409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 226192409 is about 15039.6944450344. The cubic root of 226192409 is about 609.2927474482.

The spelling of 226192409 in words is "two hundred twenty-six million, one hundred ninety-two thousand, four hundred nine".