12739922 has 16 divisors (see below), whose sum is σ = 20717592. Its totient is φ = 5840640.

The previous prime is 12739897. The next prime is 12739927. The reversal of 12739922 is 22993721.

It can be written as a sum of positive squares in 4 ways, for example, as 2886601 + 9853321 = 1699^2 + 3139^2 .

It is a super-2 number, since 2×12739922² = 324611225132168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12739927) 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, 2522 + ... + 5642.

Almost surely, 2^12739922 is an apocalyptic number.

12739922 is a deficient number, since it is larger than the sum of its proper divisors (7977670).

12739922 is a wasteful number, since it uses less digits than its factorization.

12739922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293.

The product of its digits is 13608, while the sum is 35.

The square root of 12739922 is about 3569.3027330278. The cubic root of 12739922 is about 233.5548676061.

The spelling of 12739922 in words is "twelve million, seven hundred thirty-nine thousand, nine hundred twenty-two".