1099707840 has 1120 divisors, whose sum is σ = 5310835200. Its totient is φ = 209018880.

The previous prime is 1099707797. The next prime is 1099707881. The reversal of 1099707840 is 487079901.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 37920946 + ... + 37920974.

Almost surely, 2^1099707840 is an apocalyptic number.

1099707840 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 1099707840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655417600).

1099707840 is an abundant number, since it is smaller than the sum of its proper divisors (4211127360).

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

1099707840 is a wasteful number, since it uses less digits than its factorization.

1099707840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 1099707840 is about 33161.8431333362. The cubic root of 1099707840 is about 1032.1887161645.

The spelling of 1099707840 in words is "one billion, ninety-nine million, seven hundred seven thousand, eight hundred forty".