1099441408 has 72 divisors (see below), whose sum is σ = 2502555048. Its totient is φ = 477560832.

The previous prime is 1099441397. The next prime is 1099441411. The reversal of 1099441408 is 8041449901.

It can be written as a sum of positive squares in 4 ways, for example, as 10969344 + 1088472064 = 3312^2 + 32992^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 46860 + ... + 66292.

It is an arithmetic number, because the mean of its divisors is an integer number (34757709).

Almost surely, 2^1099441408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099441408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251277524).

1099441408 is an abundant number, since it is smaller than the sum of its proper divisors (1403113640).

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

1099441408 is a wasteful number, since it uses less digits than its factorization.

1099441408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19479 (or 19465 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1099441408 is about 33157.8257429524. The cubic root of 1099441408 is about 1032.1053515027.

The spelling of 1099441408 in words is "one billion, ninety-nine million, four hundred forty-one thousand, four hundred eight".