12944917 has 4 divisors (see below), whose sum is σ = 12964716. Its totient is φ = 12925120.

The previous prime is 12944891. The next prime is 12944923. The reversal of 12944917 is 71944921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12327121 + 617796 = 3511^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 12944917 - 2¹¹ = 12942869 is a prime.

It is a super-2 number, since 2×12944917² = 335141752273778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12944977) 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, 8884 + ... + 10237.

It is an arithmetic number, because the mean of its divisors is an integer number (3241179).

Almost surely, 2^12944917 is an apocalyptic number.

It is an amenable number.

12944917 is a deficient number, since it is larger than the sum of its proper divisors (19799).

12944917 is an equidigital number, since it uses as much as digits as its factorization.

12944917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19798.

The product of its digits is 18144, while the sum is 37.

The square root of 12944917 is about 3597.9045290280. The cubic root of 12944917 is about 234.8008997196.

It can be divided in two parts, 12944 and 917, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 12944917 in words is "twelve million, nine hundred forty-four thousand, nine hundred seventeen".