1099040 has 24 divisors (see below), whose sum is σ = 2596860. Its totient is φ = 439552.

The previous prime is 1099031. The next prime is 1099051. The reversal of 1099040 is 409901.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 169744 = 964^2 + 412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1098997 and 1099015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275 + ... + 3594.

2^1099040 is an apocalyptic number.

1099040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099040 is an abundant number, since it is smaller than the sum of its proper divisors (1497820).

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

1099040 is an equidigital number, since it uses as much as digits as its factorization.

1099040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884 (or 6876 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1099040 is about 1048.3510862302. The cubic root of 1099040 is about 103.1979728384.

The spelling of 1099040 in words is "one million, ninety-nine thousand, forty".