14213866 has 4 divisors (see below), whose sum is σ = 21320802. Its totient is φ = 7106932.

The previous prime is 14213863. The next prime is 14213909. The reversal of 14213866 is 66831241.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 9740641 + 4473225 = 3121^2 + 2115^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (14213861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3553465 + ... + 3553468.

Almost surely, 2^14213866 is an apocalyptic number.

14213866 is a deficient number, since it is larger than the sum of its proper divisors (7106936).

14213866 is an equidigital number, since it uses as much as digits as its factorization.

14213866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106935.

The product of its digits is 6912, while the sum is 31.

The square root of 14213866 is about 3770.1281145340. The cubic root of 14213866 is about 242.2352855914.

The spelling of 14213866 in words is "fourteen million, two hundred thirteen thousand, eight hundred sixty-six".