11717839 has 8 divisors (see below), whose sum is σ = 13489280. Its totient is φ = 9970776.

The previous prime is 11717837. The next prime is 11717861. The reversal of 11717839 is 93871711.

11717839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11717839 - 2¹ = 11717837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11717798 and 11717807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11717837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5049 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (1686160).

Almost surely, 2^11717839 is an apocalyptic number.

11717839 is a deficient number, since it is larger than the sum of its proper divisors (1771441).

11717839 is a wasteful number, since it uses less digits than its factorization.

11717839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12189.

The product of its digits is 10584, while the sum is 37.

The square root of 11717839 is about 3423.1329217546. The cubic root of 11717839 is about 227.1341880960.

It can be divided in two parts, 117 and 17839, that added together give a square (17956 = 134²).

The spelling of 11717839 in words is "eleven million, seven hundred seventeen thousand, eight hundred thirty-nine".