13947937 has 2 divisors, whose sum is σ = 13947938. Its totient is φ = 13947936.

The previous prime is 13947911. The next prime is 13947949. The reversal of 13947937 is 73974931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11128896 + 2819041 = 3336^2 + 1679^2 .

It is a cyclic number.

It is not a de Polignac number, because 13947937 - 2⁷ = 13947809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13947893 and 13947902.

It is not a weakly prime, because it can be changed into another prime (13947907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6973968 + 6973969.

It is an arithmetic number, because the mean of its divisors is an integer number (6973969).

Almost surely, 2^13947937 is an apocalyptic number.

It is an amenable number.

13947937 is a deficient number, since it is larger than the sum of its proper divisors (1).

13947937 is an equidigital number, since it uses as much as digits as its factorization.

13947937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 13947937 is about 3734.6936956061. The cubic root of 13947937 is about 240.7150952215.

It can be divided in two parts, 13947 and 937, that added together give a square (14884 = 122²).

The spelling of 13947937 in words is "thirteen million, nine hundred forty-seven thousand, nine hundred thirty-seven".