1099219 has 4 divisors (see below), whose sum is σ = 1199160. Its totient is φ = 999280.

The previous prime is 1099199. The next prime is 1099223. The reversal of 1099219 is 9129901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1099219 - 2⁹ = 1098707 is a prime.

It is a super-2 number, since 2×1099219² = 2416564819922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49954 + ... + 49975.

It is an arithmetic number, because the mean of its divisors is an integer number (299790).

2^1099219 is an apocalyptic number.

1099219 is a deficient number, since it is larger than the sum of its proper divisors (99941).

1099219 is an equidigital number, since it uses as much as digits as its factorization.

1099219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99940.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1099219 is about 1048.4364549175. The cubic root of 1099219 is about 103.2035751320.

It can be divided in two parts, 10992 and 19, that added together give a palindrome (11011).

The spelling of 1099219 in words is "one million, ninety-nine thousand, two hundred nineteen".