12813977 has 8 divisors (see below), whose sum is σ = 14017152. Its totient is φ = 11617200.

The previous prime is 12813973. The next prime is 12813979. The reversal of 12813977 is 77931821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12813977 - 2² = 12813973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12813977.

It is not an unprimeable number, because it can be changed into a prime (12813973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3248 + ... + 6014.

It is an arithmetic number, because the mean of its divisors is an integer number (1752144).

Almost surely, 2^12813977 is an apocalyptic number.

It is an amenable number.

12813977 is a deficient number, since it is larger than the sum of its proper divisors (1203175).

12813977 is a wasteful number, since it uses less digits than its factorization.

12813977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199.

The product of its digits is 21168, while the sum is 38.

The square root of 12813977 is about 3579.6615761829. The cubic root of 12813977 is about 234.0065318263.

The spelling of 12813977 in words is "twelve million, eight hundred thirteen thousand, nine hundred seventy-seven".