12877749 has 6 divisors (see below), whose sum is σ = 18601206. Its totient is φ = 8585160.

The previous prime is 12877727. The next prime is 12877757. The reversal of 12877749 is 94777821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 324900 = 3543^2 + 570^2 .

It is not a de Polignac number, because 12877749 - 2¹⁵ = 12844981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 715422 + ... + 715439.

It is an arithmetic number, because the mean of its divisors is an integer number (3100201).

Almost surely, 2^12877749 is an apocalyptic number.

It is an amenable number.

12877749 is a deficient number, since it is larger than the sum of its proper divisors (5723457).

12877749 is a wasteful number, since it uses less digits than its factorization.

12877749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430867 (or 1430864 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 12877749 is about 3588.5580669678. The cubic root of 12877749 is about 234.3940871922.

It can be divided in two parts, 128 and 77749, that added together give a palindrome (77877).

The spelling of 12877749 in words is "twelve million, eight hundred seventy-seven thousand, seven hundred forty-nine".