12227639 has 4 divisors (see below), whose sum is σ = 12342024. Its totient is φ = 12113256.

The previous prime is 12227627. The next prime is 12227681. The reversal of 12227639 is 93672221.

It is a happy number.

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

It is not a de Polignac number, because 12227639 - 2⁴ = 12227623 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 (12220639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57032 + ... + 57245.

It is an arithmetic number, because the mean of its divisors is an integer number (3085506).

Almost surely, 2^12227639 is an apocalyptic number.

12227639 is a deficient number, since it is larger than the sum of its proper divisors (114385).

12227639 is a wasteful number, since it uses less digits than its factorization.

12227639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114384.

The product of its digits is 9072, while the sum is 32.

The square root of 12227639 is about 3496.8041123289. The cubic root of 12227639 is about 230.3814652717.

The spelling of 12227639 in words is "twelve million, two hundred twenty-seven thousand, six hundred thirty-nine".