1099345 has 12 divisors (see below), whose sum is σ = 1429596. Its totient is φ = 811200.

The previous prime is 1099337. The next prime is 1099363. The reversal of 1099345 is 5439901.

It can be written as a sum of positive squares in 6 ways, for example, as 603729 + 495616 = 777^2 + 704^2 .

It is not a de Polignac number, because 1099345 - 2³ = 1099337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (119133).

2^1099345 is an apocalyptic number.

It is an amenable number.

1099345 is a deficient number, since it is larger than the sum of its proper divisors (330251).

1099345 is a wasteful number, since it uses less digits than its factorization.

1099345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1099345 is about 1048.4965426743. The cubic root of 1099345 is about 103.2075182813.

It can be divided in two parts, 1099 and 345, that added together give a square (1444 = 38²).

The spelling of 1099345 in words is "one million, ninety-nine thousand, three hundred forty-five".