1199091 has 8 divisors (see below), whose sum is σ = 1609984. Its totient is φ = 793800.

The previous prime is 1199089. The next prime is 1199117. The reversal of 1199091 is 1909911.

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

It is not a de Polignac number, because 1199091 - 2¹ = 1199089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1199491) 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, 871 + ... + 1776.

It is an arithmetic number, because the mean of its divisors is an integer number (201248).

2^1199091 is an apocalyptic number.

1199091 is a deficient number, since it is larger than the sum of its proper divisors (410893).

1199091 is a wasteful number, since it uses less digits than its factorization.

1199091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 1199091 is about 1095.0301365716. The cubic root of 1199091 is about 106.2390180114.

The spelling of 1199091 in words is "one million, one hundred ninety-nine thousand, ninety-one".