1099285 has 24 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 755040.

The previous prime is 1099279. The next prime is 1099289. The reversal of 1099285 is 5829901.

It is not a de Polignac number, because 1099285 - 2¹¹ = 1097237 is a prime.

It is a super-2 number, since 2×1099285² = 2416855022450, which contains 22 as substring.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1099285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13876 + ... + 13954.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2^1099285 is an apocalyptic number.

It is an amenable number.

1099285 is a deficient number, since it is larger than the sum of its proper divisors (432875).

1099285 is a wasteful number, since it uses less digits than its factorization.

1099285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1099285 is about 1048.4679298863. The cubic root of 1099285 is about 103.2056406287.

The spelling of 1099285 in words is "one million, ninety-nine thousand, two hundred eighty-five".