13986973 has 32 divisors (see below), whose sum is σ = 19111680. Its totient is φ = 9884160.

The previous prime is 13986943. The next prime is 13986977. The reversal of 13986973 is 37968931.

It is a de Polignac number, because none of the positive numbers 2^k-13986973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13986977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89011 + ... + 89167.

It is an arithmetic number, because the mean of its divisors is an integer number (597240).

Almost surely, 2^13986973 is an apocalyptic number.

13986973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13986973 is a deficient number, since it is larger than the sum of its proper divisors (5124707).

13986973 is a wasteful number, since it uses less digits than its factorization.

13986973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its digits is 244944, while the sum is 46.

The square root of 13986973 is about 3739.9161755312. The cubic root of 13986973 is about 240.9394486399.

The spelling of 13986973 in words is "thirteen million, nine hundred eighty-six thousand, nine hundred seventy-three".