11109993 has 16 divisors (see below), whose sum is σ = 15785280. Its totient is φ = 6926336.

The previous prime is 11109983. The next prime is 11110031. The reversal of 11109993 is 39990111.

It is a cyclic number.

It is not a de Polignac number, because 11109993 - 2⁴ = 11109977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11109983) 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 15 ways as a sum of consecutive naturals, for example, 8521 + ... + 9737.

It is an arithmetic number, because the mean of its divisors is an integer number (986580).

Almost surely, 2^11109993 is an apocalyptic number.

It is an amenable number.

11109993 is a deficient number, since it is larger than the sum of its proper divisors (4675287).

11109993 is a wasteful number, since it uses less digits than its factorization.

11109993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 11109993 is about 3333.1656124471. The cubic root of 11109993 is about 223.1368314388.

The spelling of 11109993 in words is "eleven million, one hundred nine thousand, nine hundred ninety-three".