1099490 has 32 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 370944.

The previous prime is 1099489. The next prime is 1099493. The reversal of 1099490 is 949901.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7841 + ... + 7979.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2^1099490 is an apocalyptic number.

1099490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1099490 is an abundant number, since it is smaller than the sum of its proper divisors (1198750).

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

1099490 is a wasteful number, since it uses less digits than its factorization.

1099490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1099490 is about 1048.5656870220. The cubic root of 1099490 is about 103.2120556595.

The spelling of 1099490 in words is "one million, ninety-nine thousand, four hundred ninety".