1099197 has 16 divisors (see below), whose sum is σ = 1776960. Its totient is φ = 666000.

The previous prime is 1099181. The next prime is 1099199. The reversal of 1099197 is 7919901.

It is not a de Polignac number, because 1099197 - 2⁴ = 1099181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (111060).

2^1099197 is an apocalyptic number.

It is an amenable number.

1099197 is a deficient number, since it is larger than the sum of its proper divisors (677763).

1099197 is a wasteful number, since it uses less digits than its factorization.

1099197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3715 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 1099197 is about 1048.4259630513. The cubic root of 1099197 is about 103.2028866148.

It can be divided in two parts, 1099 and 197, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1099197 in words is "one million, ninety-nine thousand, one hundred ninety-seven".