12798277 has 4 divisors (see below), whose sum is σ = 12930316. Its totient is φ = 12666240.

The previous prime is 12798259. The next prime is 12798283. The reversal of 12798277 is 77289721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77289721 = 1669 ⋅46309.

It can be written as a sum of positive squares in 2 ways, for example, as 4879681 + 7918596 = 2209^2 + 2814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12798277 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 (12798217) 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, 65874 + ... + 66067.

It is an arithmetic number, because the mean of its divisors is an integer number (3232579).

Almost surely, 2^12798277 is an apocalyptic number.

It is an amenable number.

12798277 is a deficient number, since it is larger than the sum of its proper divisors (132039).

12798277 is an equidigital number, since it uses as much as digits as its factorization.

12798277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132038.

The product of its digits is 98784, while the sum is 43.

The square root of 12798277 is about 3577.4679593254. The cubic root of 12798277 is about 233.9109225807.

The spelling of 12798277 in words is "twelve million, seven hundred ninety-eight thousand, two hundred seventy-seven".