13947166 has 4 divisors (see below), whose sum is σ = 20920752. Its totient is φ = 6973582.

The previous prime is 13947163. The next prime is 13947209. The reversal of 13947166 is 66174931.

13947166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486790 + ... + 3486793.

It is an arithmetic number, because the mean of its divisors is an integer number (5230188).

Almost surely, 2^13947166 is an apocalyptic number.

13947166 is a deficient number, since it is larger than the sum of its proper divisors (6973586).

13947166 is an equidigital number, since it uses as much as digits as its factorization.

13947166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973585.

The product of its digits is 27216, while the sum is 37.

The square root of 13947166 is about 3734.5904728631. The cubic root of 13947166 is about 240.7106598044.

The spelling of 13947166 in words is "thirteen million, nine hundred forty-seven thousand, one hundred sixty-six".