1099158 has 16 divisors (see below), whose sum is σ = 2274480. Its totient is φ = 353696.

The previous prime is 1099139. The next prime is 1099171. The reversal of 1099158 is 8519901.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2985 + ... + 3332.

It is an arithmetic number, because the mean of its divisors is an integer number (142155).

2^1099158 is an apocalyptic number.

1099158 is an abundant number, since it is smaller than the sum of its proper divisors (1175322).

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

1099158 is a wasteful number, since it uses less digits than its factorization.

1099158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1099158 is about 1048.4073635758. The cubic root of 1099158 is about 103.2016660388.

The spelling of 1099158 in words is "one million, ninety-nine thousand, one hundred fifty-eight".