12099456 has 96 divisors (see below), whose sum is σ = 36199800. Its totient is φ = 4022784.

The previous prime is 12099443. The next prime is 12099473. The reversal of 12099456 is 65499021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12099456.

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 11 ways as a sum of consecutive naturals, for example, 30910 + ... + 31298.

Almost surely, 2^12099456 is an apocalyptic number.

12099456 is a gapful number since it is divisible by the number (16) 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 12099456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18099900).

12099456 is an abundant number, since it is smaller than the sum of its proper divisors (24100344).

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

12099456 is an frugal number, since it uses more digits than its factorization.

12099456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 12099456 is about 3478.4272308042. The cubic root of 12099456 is about 229.5736019216.

The spelling of 12099456 in words is "twelve million, ninety-nine thousand, four hundred fifty-six".