1099140 has 48 divisors (see below), whose sum is σ = 3518592. Its totient is φ = 251136.

The previous prime is 1099139. The next prime is 1099171. The reversal of 1099140 is 419901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099140.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 889 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (73304).

2^1099140 is an apocalyptic number.

1099140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099140 is an abundant number, since it is smaller than the sum of its proper divisors (2419452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099140 is a wasteful number, since it uses less digits than its factorization.

1099140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1099140 is about 1048.3987790912. The cubic root of 1099140 is about 103.2011026864.

The spelling of 1099140 in words is "one million, ninety-nine thousand, one hundred forty".