226261909 has 4 divisors (see below), whose sum is σ = 228594604. Its totient is φ = 223929216.

The previous prime is 226261883. The next prime is 226261913. The reversal of 226261909 is 909162622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 909162622 = 2 ⋅454581311.

It can be written as a sum of positive squares in 2 ways, for example, as 164403684 + 61858225 = 12822^2 + 7865^2 .

It is a cyclic number.

It is not a de Polignac number, because 226261909 - 2⁷ = 226261781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226261969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166202 + ... + 1166395.

It is an arithmetic number, because the mean of its divisors is an integer number (57148651).

Almost surely, 2^226261909 is an apocalyptic number.

It is an amenable number.

226261909 is a deficient number, since it is larger than the sum of its proper divisors (2332695).

226261909 is an equidigital number, since it uses as much as digits as its factorization.

226261909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332694.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 226261909 is about 15042.0048198370. The cubic root of 226261909 is about 609.3551449292.

The spelling of 226261909 in words is "two hundred twenty-six million, two hundred sixty-one thousand, nine hundred nine".