1099080 has 96 divisors (see below), whose sum is σ = 3706560. Its totient is φ = 282240.

The previous prime is 1099079. The next prime is 1099081. The reversal of 1099080 is 809901.

It is an interprime number because it is at equal distance from previous prime (1099079) and next prime (1099081).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099081) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15445 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (38610).

2^1099080 is an apocalyptic number.

1099080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853280).

1099080 is an abundant number, since it is smaller than the sum of its proper divisors (2607480).

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

1099080 is a wasteful number, since it uses less digits than its factorization.

1099080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1099080 is about 1048.3701636350. The cubic root of 1099080 is about 103.1992248004.

The spelling of 1099080 in words is "one million, ninety-nine thousand, eighty".