12272709 has 4 divisors (see below), whose sum is σ = 16363616. Its totient is φ = 8181804.

The previous prime is 12272707. The next prime is 12272717. The reversal of 12272709 is 90727221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12272709 - 2¹ = 12272707 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 (12272707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2045449 + ... + 2045454.

It is an arithmetic number, because the mean of its divisors is an integer number (4090904).

Almost surely, 2^12272709 is an apocalyptic number.

It is an amenable number.

12272709 is a deficient number, since it is larger than the sum of its proper divisors (4090907).

12272709 is an equidigital number, since it uses as much as digits as its factorization.

12272709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090906.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 12272709 is about 3503.2426407544. The cubic root of 12272709 is about 230.6641734707.

The spelling of 12272709 in words is "twelve million, two hundred seventy-two thousand, seven hundred nine".