11399866 has 4 divisors (see below), whose sum is σ = 17099802. Its totient is φ = 5699932.

The previous prime is 11399837. The next prime is 11399873. The reversal of 11399866 is 66899311.

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., 10751841 + 648025 = 3279^2 + 805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2849965 + ... + 2849968.

Almost surely, 2^11399866 is an apocalyptic number.

11399866 is a deficient number, since it is larger than the sum of its proper divisors (5699936).

11399866 is an equidigital number, since it uses as much as digits as its factorization.

11399866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699935.

The product of its digits is 69984, while the sum is 43.

The square root of 11399866 is about 3376.3687594811. The cubic root of 11399866 is about 225.0608296435.

The spelling of 11399866 in words is "eleven million, three hundred ninety-nine thousand, eight hundred sixty-six".