12272439 has 4 divisors (see below), whose sum is σ = 16363256. Its totient is φ = 8181624.

The previous prime is 12272437. The next prime is 12272441. The reversal of 12272439 is 93427221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12272437) and next prime (12272441).

It is not a de Polignac number, because 12272439 - 2¹ = 12272437 is a prime.

It is a super-2 number, since 2×12272439² = 301225518017442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12272431) 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, 2045404 + ... + 2045409.

It is an arithmetic number, because the mean of its divisors is an integer number (4090814).

Almost surely, 2^12272439 is an apocalyptic number.

12272439 is a deficient number, since it is larger than the sum of its proper divisors (4090817).

12272439 is an equidigital number, since it uses as much as digits as its factorization.

12272439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090816.

The product of its digits is 6048, while the sum is 30.

The square root of 12272439 is about 3503.2041048160. The cubic root of 12272439 is about 230.6624819185.

The spelling of 12272439 in words is "twelve million, two hundred seventy-two thousand, four hundred thirty-nine".