1099887 has 8 divisors (see below), whose sum is σ = 1473840. Its totient is φ = 729600.

The previous prime is 1099867. The next prime is 1099927. The reversal of 1099887 is 7889901.

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

It is not a de Polignac number, because 1099887 - 2⁶ = 1099823 is a prime.

1099887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099807) 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, 114 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (184230).

2^1099887 is an apocalyptic number.

1099887 is a deficient number, since it is larger than the sum of its proper divisors (373953).

1099887 is a wasteful number, since it uses less digits than its factorization.

1099887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1099887 is about 1048.7549761503. The cubic root of 1099887 is about 103.2244766472.

The spelling of 1099887 in words is "one million, ninety-nine thousand, eight hundred eighty-seven".