11809017 has 16 divisors (see below), whose sum is σ = 19085760. Its totient is φ = 7156800.

The previous prime is 11809009. The next prime is 11809019. The reversal of 11809017 is 71090811.

11809017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11809017 - 2³ = 11809009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11809019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19584 + ... + 20177.

It is an arithmetic number, because the mean of its divisors is an integer number (1192860).

Almost surely, 2^11809017 is an apocalyptic number.

It is an amenable number.

11809017 is a deficient number, since it is larger than the sum of its proper divisors (7276743).

11809017 is a wasteful number, since it uses less digits than its factorization.

11809017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39781 (or 39775 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 11809017 is about 3436.4250319191. The cubic root of 11809017 is about 227.7217866916.

Adding to 11809017 its reverse (71090811), we get a palindrome (82899828).

The spelling of 11809017 in words is "eleven million, eight hundred nine thousand, seventeen".