12897879 has 8 divisors (see below), whose sum is σ = 17292912. Its totient is φ = 8550720.

The previous prime is 12897869. The next prime is 12897889. The reversal of 12897879 is 97879821.

It is an interprime number because it is at equal distance from previous prime (12897869) and next prime (12897889).

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

It is not a de Polignac number, because 12897879 - 2⁵ = 12897847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11334 + ... + 12419.

It is an arithmetic number, because the mean of its divisors is an integer number (2161614).

Almost surely, 2^12897879 is an apocalyptic number.

12897879 is a deficient number, since it is larger than the sum of its proper divisors (4395033).

12897879 is a wasteful number, since it uses less digits than its factorization.

12897879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23937.

The product of its digits is 508032, while the sum is 51.

The square root of 12897879 is about 3591.3617194596. The cubic root of 12897879 is about 234.5161555390.

The spelling of 12897879 in words is "twelve million, eight hundred ninety-seven thousand, eight hundred seventy-nine".