226409 has 2 divisors, whose sum is σ = 226410. Its totient is φ = 226408.

The previous prime is 226397. The next prime is 226427. The reversal of 226409 is 904622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225625 + 784 = 475^2 + 28^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226409 is a prime.

It is a super-2 number, since 2×226409² = 102522070562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 226409.

It is not a weakly prime, because it can be changed into another prime (226609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113204 + 113205.

It is an arithmetic number, because the mean of its divisors is an integer number (113205).

2²²⁶⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

226409 is a deficient number, since it is larger than the sum of its proper divisors (1).

226409 is an equidigital number, since it uses as much as digits as its factorization.

226409 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 226409 is about 475.8245474962. The cubic root of 226409 is about 60.9487161909.

The spelling of 226409 in words is "two hundred twenty-six thousand, four hundred nine".