12986939 has 8 divisors (see below), whose sum is σ = 14918400. Its totient is φ = 11074536.

The previous prime is 12986933. The next prime is 12986951. The reversal of 12986939 is 93968921.

12986939 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12986939 is a prime.

12986939 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 12986893 and 12986902.

It is not an unprimeable number, because it can be changed into a prime (12986933) 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, 3269 + ... + 6054.

It is an arithmetic number, because the mean of its divisors is an integer number (1864800).

Almost surely, 2^12986939 is an apocalyptic number.

12986939 is a deficient number, since it is larger than the sum of its proper divisors (1931461).

12986939 is an equidigital number, since it uses as much as digits as its factorization.

12986939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529.

The product of its digits is 209952, while the sum is 47.

The square root of 12986939 is about 3603.7395854862. The cubic root of 12986939 is about 235.0546967899.

The spelling of 12986939 in words is "twelve million, nine hundred eighty-six thousand, nine hundred thirty-nine".