12776889 has 8 divisors (see below), whose sum is σ = 17062720. Its totient is φ = 8504496.

The previous prime is 12776879. The next prime is 12776921. The reversal of 12776889 is 98867721.

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

It is not a de Polignac number, because 12776889 - 2⁷ = 12776761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12776839) 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, 877 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (2132840).

Almost surely, 2^12776889 is an apocalyptic number.

It is an amenable number.

12776889 is a deficient number, since it is larger than the sum of its proper divisors (4285831).

12776889 is an equidigital number, since it uses as much as digits as its factorization.

12776889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719.

The product of its digits is 338688, while the sum is 48.

The square root of 12776889 is about 3574.4774443267. The cubic root of 12776889 is about 233.7805488780.

The spelling of 12776889 in words is "twelve million, seven hundred seventy-six thousand, eight hundred eighty-nine".