11912085 has 24 divisors (see below), whose sum is σ = 20868120. Its totient is φ = 6285312.

The previous prime is 11912083. The next prime is 11912101. The reversal of 11912085 is 58021911.

11912085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3721041 + 8191044 = 1929^2 + 2862^2 .

It is not a de Polignac number, because 11912085 - 2¹ = 11912083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11912083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001 + ... + 5729.

It is an arithmetic number, because the mean of its divisors is an integer number (869505).

Almost surely, 2^11912085 is an apocalyptic number.

11912085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11912085 is a deficient number, since it is larger than the sum of its proper divisors (8956035).

11912085 is a wasteful number, since it uses less digits than its factorization.

11912085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 11912085 is about 3451.3888508831. The cubic root of 11912085 is about 228.3823800488.

Adding to 11912085 its reverse (58021911), we get a palindrome (69933996).

The spelling of 11912085 in words is "eleven million, nine hundred twelve thousand, eighty-five".