13967939 has 2 divisors, whose sum is σ = 13967940. Its totient is φ = 13967938.

The previous prime is 13967929. The next prime is 13967957. The reversal of 13967939 is 93976931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13967939 - 2⁸ = 13967683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13967893 and 13967902.

It is not a weakly prime, because it can be changed into another prime (13967929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6983969 + 6983970.

It is an arithmetic number, because the mean of its divisors is an integer number (6983970).

Almost surely, 2^13967939 is an apocalyptic number.

13967939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13967939 is an equidigital number, since it uses as much as digits as its factorization.

13967939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275562, while the sum is 47.

The square root of 13967939 is about 3737.3705997666. The cubic root of 13967939 is about 240.8301058649.

The spelling of 13967939 in words is "thirteen million, nine hundred sixty-seven thousand, nine hundred thirty-nine".