11788639 has 2 divisors, whose sum is σ = 11788640. Its totient is φ = 11788638.

The previous prime is 11788591. The next prime is 11788663. The reversal of 11788639 is 93688711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11788639 - 2¹⁷ = 11657567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11788595 and 11788604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11788039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5894319 + 5894320.

It is an arithmetic number, because the mean of its divisors is an integer number (5894320).

Almost surely, 2^11788639 is an apocalyptic number.

11788639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11788639 is an equidigital number, since it uses as much as digits as its factorization.

11788639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 11788639 is about 3433.4587517546. The cubic root of 11788639 is about 227.5907233862.

The spelling of 11788639 in words is "eleven million, seven hundred eighty-eight thousand, six hundred thirty-nine".