11199887 has 8 divisors (see below), whose sum is σ = 11674800. Its totient is φ = 10730944.

The previous prime is 11199869. The next prime is 11199899. The reversal of 11199887 is 78899111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11199887 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 (11199857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564 + ... + 5382.

It is an arithmetic number, because the mean of its divisors is an integer number (1459350).

Almost surely, 2^11199887 is an apocalyptic number.

11199887 is a deficient number, since it is larger than the sum of its proper divisors (474913).

11199887 is a wasteful number, since it uses less digits than its factorization.

11199887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985.

The product of its digits is 36288, while the sum is 44.

The square root of 11199887 is about 3346.6232234896. The cubic root of 11199887 is about 223.7370359623.

The spelling of 11199887 in words is "eleven million, one hundred ninety-nine thousand, eight hundred eighty-seven".