13980947 has 2 divisors, whose sum is σ = 13980948. Its totient is φ = 13980946.

The previous prime is 13980943. The next prime is 13980971. The reversal of 13980947 is 74908931.

It is a happy number.

13980947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (74908931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13980947 - 2² = 13980943 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13980943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990473 + 6990474.

It is an arithmetic number, because the mean of its divisors is an integer number (6990474).

Almost surely, 2^13980947 is an apocalyptic number.

13980947 is a deficient number, since it is larger than the sum of its proper divisors (1).

13980947 is an equidigital number, since it uses as much as digits as its factorization.

13980947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 13980947 is about 3739.1104557100. The cubic root of 13980947 is about 240.9048423989.

The spelling of 13980947 in words is "thirteen million, nine hundred eighty thousand, nine hundred forty-seven".