2272409 has 2 divisors, whose sum is σ = 2272410. Its totient is φ = 2272408.

The previous prime is 2272397. The next prime is 2272427. The reversal of 2272409 is 9042722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 105625 = 1472^2 + 325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2272409 is a prime.

It is equal to p₁₆₇₆₅₁ and since 2272409 and 167651 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2272499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136204 + 1136205.

It is an arithmetic number, because the mean of its divisors is an integer number (1136205).

2^2272409 is an apocalyptic number.

It is an amenable number.

2272409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2272409 is an equidigital number, since it uses as much as digits as its factorization.

2272409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2272409 is about 1507.4511600712. The cubic root of 2272409 is about 131.4706570932.

The spelling of 2272409 in words is "two million, two hundred seventy-two thousand, four hundred nine".