11689739 has 2 divisors, whose sum is σ = 11689740. Its totient is φ = 11689738.

The previous prime is 11689723. The next prime is 11689747. The reversal of 11689739 is 93798611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11689739 - 2⁴ = 11689723 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11689739.

It is not a weakly prime, because it can be changed into another prime (11689039) 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 as a sum of consecutive naturals, namely, 5844869 + 5844870.

It is an arithmetic number, because the mean of its divisors is an integer number (5844870).

Almost surely, 2^11689739 is an apocalyptic number.

11689739 is a deficient number, since it is larger than the sum of its proper divisors (1).

11689739 is an equidigital number, since it uses as much as digits as its factorization.

11689739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 11689739 is about 3419.0260309041. The cubic root of 11689739 is about 226.9524828251.

The spelling of 11689739 in words is "eleven million, six hundred eighty-nine thousand, seven hundred thirty-nine".