1099873 has 4 divisors (see below), whose sum is σ = 1105600. Its totient is φ = 1094148.

The previous prime is 1099867. The next prime is 1099927. The reversal of 1099873 is 3789901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3789901 = 457 ⋅8293.

It is a cyclic number.

It is not a de Polignac number, because 1099873 - 2⁵ = 1099841 is a prime.

It is a super-2 number, since 2×1099873² = 2419441232258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2565 + ... + 2962.

It is an arithmetic number, because the mean of its divisors is an integer number (276400).

2^1099873 is an apocalyptic number.

It is an amenable number.

1099873 is a deficient number, since it is larger than the sum of its proper divisors (5727).

1099873 is an equidigital number, since it uses as much as digits as its factorization.

1099873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1099873 is about 1048.7483015481. The cubic root of 1099873 is about 103.2240386784.

The spelling of 1099873 in words is "one million, ninety-nine thousand, eight hundred seventy-three".