1093999872 has 144 divisors (see below), whose sum is σ = 3396310400. Its totient is φ = 312496128.

The previous prime is 1093999859. The next prime is 1093999883. The reversal of 1093999872 is 2789993901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261348 + ... + 265500.

Almost surely, 2^1093999872 is an apocalyptic number.

1093999872 is a gapful number since it is divisible by the number (12) 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 1093999872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698155200).

1093999872 is an abundant number, since it is smaller than the sum of its proper divisors (2302310528).

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

1093999872 is an frugal number, since it uses more digits than its factorization.

1093999872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193 (or 4165 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 1093999872 is about 33075.6688821254. The cubic root of 1093999872 is about 1030.3997794580.

The spelling of 1093999872 in words is "one billion, ninety-three million, nine hundred ninety-nine thousand, eight hundred seventy-two".