1099017864 has 144 divisors (see below), whose sum is σ = 3487086720. Its totient is φ = 311774400.

The previous prime is 1099017851. The next prime is 1099017869. The reversal of 1099017864 is 4687109901.

It is a happy number.

It is a super-2 number, since 2×1099017864² = 2415680530782244992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1099017869) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 531697 + ... + 533759.

It is an arithmetic number, because the mean of its divisors is an integer number (24215880).

Almost surely, 2^1099017864 is an apocalyptic number.

1099017864 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 1099017864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743543360).

1099017864 is an abundant number, since it is smaller than the sum of its proper divisors (2388068856).

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

1099017864 is a wasteful number, since it uses less digits than its factorization.

1099017864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1099017864 is about 33151.4383398368. The cubic root of 1099017864 is about 1031.9727998960.

The spelling of 1099017864 in words is "one billion, ninety-nine million, seventeen thousand, eight hundred sixty-four".