11849666 has 4 divisors (see below), whose sum is σ = 17774502. Its totient is φ = 5924832.

The previous prime is 11849659. The next prime is 11849671. The reversal of 11849666 is 66694811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66694811 = 109 ⋅611879.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 4532641 = 2705^2 + 2129^2 .

It is an unprimeable number.

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, 2962415 + ... + 2962418.

Almost surely, 2^11849666 is an apocalyptic number.

11849666 is a deficient number, since it is larger than the sum of its proper divisors (5924836).

11849666 is an equidigital number, since it uses as much as digits as its factorization.

11849666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924835.

The product of its digits is 62208, while the sum is 41.

The square root of 11849666 is about 3442.3343823632. The cubic root of 11849666 is about 227.9827754506.

It can be divided in two parts, 11 and 849666, that multiplied together give a triangular number (9346326 = T₄₃₂₃).

The spelling of 11849666 in words is "eleven million, eight hundred forty-nine thousand, six hundred sixty-six".