12787879 has 8 divisors (see below), whose sum is σ = 13799520. Its totient is φ = 11780256.

The previous prime is 12787877. The next prime is 12787889. The reversal of 12787879 is 97878721.

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 12787879 - 2¹ = 12787877 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 (12787877) 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, 10977 + ... + 12085.

It is an arithmetic number, because the mean of its divisors is an integer number (1724940).

Almost surely, 2^12787879 is an apocalyptic number.

12787879 is a deficient number, since it is larger than the sum of its proper divisors (1011641).

12787879 is a wasteful number, since it uses less digits than its factorization.

12787879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its digits is 395136, while the sum is 49.

The square root of 12787879 is about 3576.0144015370. The cubic root of 12787879 is about 233.8475581983.

The spelling of 12787879 in words is "twelve million, seven hundred eighty-seven thousand, eight hundred seventy-nine".