1099986 has 16 divisors (see below), whose sum is σ = 2316000. Its totient is φ = 347328.

The previous prime is 1099961. The next prime is 1099997. The reversal of 1099986 is 6899901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4711 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (144750).

2^1099986 is an apocalyptic number.

1099986 is an abundant number, since it is smaller than the sum of its proper divisors (1216014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099986 is a wasteful number, since it uses less digits than its factorization.

1099986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 1099986 is about 1048.8021739108. The cubic root of 1099986 is about 103.2275736068.

The spelling of 1099986 in words is "one million, ninety-nine thousand, nine hundred eighty-six".