11087993 has 4 divisors (see below), whose sum is σ = 12672000. Its totient is φ = 9503988.

The previous prime is 11087983. The next prime is 11088019. The reversal of 11087993 is 39978011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39978011 = 3461 ⋅11551.

It is a cyclic number.

It is not a de Polignac number, because 11087993 - 2⁴ = 11087977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11087903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791993 + ... + 792006.

It is an arithmetic number, because the mean of its divisors is an integer number (3168000).

Almost surely, 2^11087993 is an apocalyptic number.

It is an amenable number.

11087993 is a deficient number, since it is larger than the sum of its proper divisors (1584007).

11087993 is an equidigital number, since it uses as much as digits as its factorization.

11087993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584006.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11087993 is about 3329.8638110289. The cubic root of 11087993 is about 222.9894489837.

The spelling of 11087993 in words is "eleven million, eighty-seven thousand, nine hundred ninety-three".