12977847 has 8 divisors (see below), whose sum is σ = 19226480. Its totient is φ = 8651880.

The previous prime is 12977843. The next prime is 12977857. The reversal of 12977847 is 74877921.

It is a happy number.

12977847 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12977847 - 2² = 12977843 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 (12977843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240304 + ... + 240357.

It is an arithmetic number, because the mean of its divisors is an integer number (2403310).

Almost surely, 2^12977847 is an apocalyptic number.

12977847 is a deficient number, since it is larger than the sum of its proper divisors (6248633).

12977847 is an equidigital number, since it uses as much as digits as its factorization.

12977847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480670 (or 480664 counting only the distinct ones).

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

The square root of 12977847 is about 3602.4778972257. The cubic root of 12977847 is about 234.9998309943. Note that the first 3 decimals are identical.

It can be divided in two parts, 12977 and 847, that added together give a cube (13824 = 24³).

The spelling of 12977847 in words is "twelve million, nine hundred seventy-seven thousand, eight hundred forty-seven".