7226909 has 2 divisors, whose sum is σ = 7226910. Its totient is φ = 7226908.

The previous prime is 7226903. The next prime is 7226917. The reversal of 7226909 is 9096227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7171684 + 55225 = 2678^2 + 235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7226909 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7226903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3613454 + 3613455.

It is an arithmetic number, because the mean of its divisors is an integer number (3613455).

Almost surely, 2^7226909 is an apocalyptic number.

It is an amenable number.

7226909 is a deficient number, since it is larger than the sum of its proper divisors (1).

7226909 is an equidigital number, since it uses as much as digits as its factorization.

7226909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 7226909 is about 2688.2910928692. The cubic root of 7226909 is about 193.3381366887.

The spelling of 7226909 in words is "seven million, two hundred twenty-six thousand, nine hundred nine".