13449866 has 4 divisors (see below), whose sum is σ = 20174802. Its totient is φ = 6724932.

The previous prime is 13449859. The next prime is 13449883. The reversal of 13449866 is 66894431.

13449866 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 can be written as a sum of positive squares in only one way, i.e., 9333025 + 4116841 = 3055^2 + 2029^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362465 + ... + 3362468.

Almost surely, 2^13449866 is an apocalyptic number.

13449866 is a deficient number, since it is larger than the sum of its proper divisors (6724936).

13449866 is an equidigital number, since it uses as much as digits as its factorization.

13449866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724935.

The product of its digits is 124416, while the sum is 41.

The square root of 13449866 is about 3667.4058951799. The cubic root of 13449866 is about 237.8150411962.

The spelling of 13449866 in words is "thirteen million, four hundred forty-nine thousand, eight hundred sixty-six".