11989317 has 4 divisors (see below), whose sum is σ = 15985760. Its totient is φ = 7992876.

The previous prime is 11989283. The next prime is 11989319. The reversal of 11989317 is 71398911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71398911 = 3 ⋅23799637.

It is not a de Polignac number, because 11989317 - 2⁶ = 11989253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989319) 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 3 ways as a sum of consecutive naturals, for example, 1998217 + ... + 1998222.

It is an arithmetic number, because the mean of its divisors is an integer number (3996440).

Almost surely, 2^11989317 is an apocalyptic number.

It is an amenable number.

11989317 is a deficient number, since it is larger than the sum of its proper divisors (3996443).

11989317 is an equidigital number, since it uses as much as digits as its factorization.

11989317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996442.

The product of its digits is 13608, while the sum is 39.

The square root of 11989317 is about 3462.5593135714. The cubic root of 11989317 is about 228.8748895496.

The spelling of 11989317 in words is "eleven million, nine hundred eighty-nine thousand, three hundred seventeen".