11439171 has 16 divisors (see below), whose sum is σ = 17003520. Its totient is φ = 7600680.

The previous prime is 11439163. The next prime is 11439187. The reversal of 11439171 is 17193411.

It is not a de Polignac number, because 11439171 - 2³ = 11439163 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 (11439101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11146 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (1062720).

Almost surely, 2^11439171 is an apocalyptic number.

11439171 is a deficient number, since it is larger than the sum of its proper divisors (5564349).

11439171 is an equidigital number, since it uses as much as digits as its factorization.

11439171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1417 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 11439171 is about 3382.1843533433. The cubic root of 11439171 is about 225.3191914163.

The spelling of 11439171 in words is "eleven million, four hundred thirty-nine thousand, one hundred seventy-one".