12775279 has 16 divisors (see below), whose sum is σ = 15046560. Its totient is φ = 10716160.

The previous prime is 12775237. The next prime is 12775289. The reversal of 12775279 is 97257721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12775279 - 2⁷ = 12775151 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 (12775229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9267 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (940410).

Almost surely, 2^12775279 is an apocalyptic number.

12775279 is a deficient number, since it is larger than the sum of its proper divisors (2271281).

12775279 is a wasteful number, since it uses less digits than its factorization.

12775279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370.

The product of its digits is 61740, while the sum is 40.

The square root of 12775279 is about 3574.2522294880. The cubic root of 12775279 is about 233.7707289995.

It can be divided in two parts, 1277 and 5279, that added together give a palindrome (6556).

The spelling of 12775279 in words is "twelve million, seven hundred seventy-five thousand, two hundred seventy-nine".