11969717 has 4 divisors (see below), whose sum is σ = 12673836. Its totient is φ = 11265600.

The previous prime is 11969701. The next prime is 11969723. The reversal of 11969717 is 71796911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8726116 + 3243601 = 2954^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 11969717 - 2⁴ = 11969701 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 (11969777) 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, 352034 + ... + 352067.

It is an arithmetic number, because the mean of its divisors is an integer number (3168459).

Almost surely, 2^11969717 is an apocalyptic number.

11969717 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11969717 is a deficient number, since it is larger than the sum of its proper divisors (704119).

11969717 is an equidigital number, since it uses as much as digits as its factorization.

11969717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704118.

The product of its digits is 23814, while the sum is 41.

The square root of 11969717 is about 3459.7278794726. The cubic root of 11969717 is about 228.7501008291.

The spelling of 11969717 in words is "eleven million, nine hundred sixty-nine thousand, seven hundred seventeen".