11868839 has 8 divisors (see below), whose sum is σ = 12597120. Its totient is φ = 11143936.

The previous prime is 11868827. The next prime is 11868869. The reversal of 11868839 is 93886811.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11868839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11868839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11868809) 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 7 ways as a sum of consecutive naturals, for example, 13322 + ... + 14184.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640).

Almost surely, 2^11868839 is an apocalyptic number.

11868839 is a deficient number, since it is larger than the sum of its proper divisors (728281).

11868839 is an equidigital number, since it uses as much as digits as its factorization.

11868839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689.

The product of its digits is 82944, while the sum is 44.

The square root of 11868839 is about 3445.1181402094. The cubic root of 11868839 is about 228.1056694448.

The spelling of 11868839 in words is "eleven million, eight hundred sixty-eight thousand, eight hundred thirty-nine".