12772839 has 4 divisors (see below), whose sum is σ = 17030456. Its totient is φ = 8515224.

The previous prime is 12772817. The next prime is 12772871. The reversal of 12772839 is 93827721.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12772839 is a prime.

It is a super-2 number, since 2×12772839² = 326290832239842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12772797 and 12772806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12772139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128804 + ... + 2128809.

It is an arithmetic number, because the mean of its divisors is an integer number (4257614).

Almost surely, 2^12772839 is an apocalyptic number.

12772839 is a deficient number, since it is larger than the sum of its proper divisors (4257617).

12772839 is an equidigital number, since it uses as much as digits as its factorization.

12772839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257616.

The product of its digits is 42336, while the sum is 39.

The square root of 12772839 is about 3573.9108830523. The cubic root of 12772839 is about 233.7558451263.

The spelling of 12772839 in words is "twelve million, seven hundred seventy-two thousand, eight hundred thirty-nine".