11199939 has 4 divisors (see below), whose sum is σ = 14933256. Its totient is φ = 7466624.

The previous prime is 11199931. The next prime is 11199943. The reversal of 11199939 is 93999111.

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

It is a cyclic number.

It is not a de Polignac number, because 11199939 - 2³ = 11199931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11199939.

It is not an unprimeable number, because it can be changed into a prime (11199931) 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 3 ways as a sum of consecutive naturals, for example, 1866654 + ... + 1866659.

It is an arithmetic number, because the mean of its divisors is an integer number (3733314).

Almost surely, 2^11199939 is an apocalyptic number.

11199939 is a deficient number, since it is larger than the sum of its proper divisors (3733317).

11199939 is an equidigital number, since it uses as much as digits as its factorization.

11199939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733316.

The product of its digits is 19683, while the sum is 42.

The square root of 11199939 is about 3346.6309925057. The cubic root of 11199939 is about 223.7373822249.

The spelling of 11199939 in words is "eleven million, one hundred ninety-nine thousand, nine hundred thirty-nine".