1099563444 has 96 divisors (see below), whose sum is σ = 3278320640. Its totient is φ = 312198624.

The previous prime is 1099563433. The next prime is 1099563457. The reversal of 1099563444 is 4443659901.

1099563444 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 5 + 634 + 4 + 4 = 666.

It is a super-2 number, since 2×1099563444² = 2418079534762282272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1099563444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118767 + ... + 127689.

Almost surely, 2^1099563444 is an apocalyptic number.

1099563444 is a gapful number since it is divisible by the number (14) 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 1099563444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639160320).

1099563444 is an abundant number, since it is smaller than the sum of its proper divisors (2178757196).

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

1099563444 is a wasteful number, since it uses less digits than its factorization.

1099563444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106 (or 9098 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1099563444 is about 33159.6659211157. The cubic root of 1099563444 is about 1032.1435373632.

The spelling of 1099563444 in words is "one billion, ninety-nine million, five hundred sixty-three thousand, four hundred forty-four".