12091885 has 16 divisors (see below), whose sum is σ = 16450560. Its totient is φ = 8458560.

The previous prime is 12091867. The next prime is 12091903. The reversal of 12091885 is 58819021.

12091885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12091867) and next prime (12091903).

It is not a de Polignac number, because 12091885 - 2¹³ = 12083693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12091885.

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, 3661 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^12091885 is an apocalyptic number.

It is an amenable number.

12091885 is a deficient number, since it is larger than the sum of its proper divisors (4358675).

12091885 is a wasteful number, since it uses less digits than its factorization.

12091885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12091885 is about 3477.3387813096. The cubic root of 12091885 is about 229.5257081872.

The spelling of 12091885 in words is "twelve million, ninety-one thousand, eight hundred eighty-five".