11519993 has 4 divisors (see below), whose sum is σ = 11546100. Its totient is φ = 11493888.

The previous prime is 11519983. The next prime is 11520013. The reversal of 11519993 is 39991511.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5234944 + 6285049 = 2288^2 + 2507^2 .

It is a cyclic number.

It is not a de Polignac number, because 11519993 - 2⁸ = 11519737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11519923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12380 + ... + 13277.

It is an arithmetic number, because the mean of its divisors is an integer number (2886525).

Almost surely, 2^11519993 is an apocalyptic number.

It is an amenable number.

11519993 is a deficient number, since it is larger than the sum of its proper divisors (26107).

11519993 is an equidigital number, since it uses as much as digits as its factorization.

11519993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26106.

The product of its digits is 10935, while the sum is 38.

The square root of 11519993 is about 3394.1115184979. Note that the first 3 decimals coincide. The cubic root of 11519993 is about 225.8486011866.

The spelling of 11519993 in words is "eleven million, five hundred nineteen thousand, nine hundred ninety-three".