11819799 has 6 divisors (see below), whose sum is σ = 17073056. Its totient is φ = 7879860.

The previous prime is 11819789. The next prime is 11819809. The reversal of 11819799 is 99791811.

It is an interprime number because it is at equal distance from previous prime (11819789) and next prime (11819809).

It is not a de Polignac number, because 11819799 - 2⁴ = 11819783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11819719) 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 in 5 ways as a sum of consecutive naturals, for example, 656647 + ... + 656664.

Almost surely, 2^11819799 is an apocalyptic number.

11819799 is a deficient number, since it is larger than the sum of its proper divisors (5253257).

11819799 is a wasteful number, since it uses less digits than its factorization.

11819799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313317 (or 1313314 counting only the distinct ones).

The product of its digits is 40824, while the sum is 45.

The square root of 11819799 is about 3437.9934554912. The cubic root of 11819799 is about 227.7910713021.

Adding to 11819799 its sum of digits (45), we get a square (11819844 = 3438²).

The spelling of 11819799 in words is "eleven million, eight hundred nineteen thousand, seven hundred ninety-nine".