11891017 has 8 divisors (see below), whose sum is σ = 12636000. Its totient is φ = 11157984.

The previous prime is 11891003. The next prime is 11891021. The reversal of 11891017 is 71019811.

11891017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11891017 - 2¹¹ = 11888969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11891617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892 + ... + 4957.

It is an arithmetic number, because the mean of its divisors is an integer number (1579500).

Almost surely, 2^11891017 is an apocalyptic number.

It is an amenable number.

11891017 is a deficient number, since it is larger than the sum of its proper divisors (744983).

11891017 is a wasteful number, since it uses less digits than its factorization.

11891017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 11891017 is about 3448.3353955206. The cubic root of 11891017 is about 228.2476597378.

The spelling of 11891017 in words is "eleven million, eight hundred ninety-one thousand, seventeen".