12819977 has 8 divisors (see below), whose sum is σ = 13167264. Its totient is φ = 12475008.

The previous prime is 12819971. The next prime is 12820009. The reversal of 12819977 is 77991821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12819977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12819971) 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, 18713 + ... + 19385.

It is an arithmetic number, because the mean of its divisors is an integer number (1645908).

Almost surely, 2^12819977 is an apocalyptic number.

It is an amenable number.

12819977 is a deficient number, since it is larger than the sum of its proper divisors (347287).

12819977 is an equidigital number, since it uses as much as digits as its factorization.

12819977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its digits is 63504, while the sum is 44.

The square root of 12819977 is about 3580.4995461527. The cubic root of 12819977 is about 234.0430497657.

The spelling of 12819977 in words is "twelve million, eight hundred nineteen thousand, nine hundred seventy-seven".