12759977 has 4 divisors (see below), whose sum is σ = 12792516. Its totient is φ = 12727440.

The previous prime is 12759973. The next prime is 12759991. The reversal of 12759977 is 77995721.

12759977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11162281 + 1597696 = 3341^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 12759977 - 2² = 12759973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12759973) 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, 15674 + ... + 16467.

It is an arithmetic number, because the mean of its divisors is an integer number (3198129).

Almost surely, 2^12759977 is an apocalyptic number.

It is an amenable number.

12759977 is a deficient number, since it is larger than the sum of its proper divisors (32539).

12759977 is an equidigital number, since it uses as much as digits as its factorization.

12759977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32538.

The product of its digits is 277830, while the sum is 47.

The square root of 12759977 is about 3572.1110005150. Note that the first 3 decimals coincide. The cubic root of 12759977 is about 233.6773562477.

The spelling of 12759977 in words is "twelve million, seven hundred fifty-nine thousand, nine hundred seventy-seven".