11958839 has 12 divisors (see below), whose sum is σ = 12777408. Its totient is φ = 11174400.

The previous prime is 11958833. The next prime is 11958853. The reversal of 11958839 is 93885911.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11958839 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 11958839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11958833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123239 + ... + 123335.

It is an arithmetic number, because the mean of its divisors is an integer number (1064784).

Almost surely, 2^11958839 is an apocalyptic number.

11958839 is a deficient number, since it is larger than the sum of its proper divisors (818569).

11958839 is an frugal number, since it uses more digits than its factorization.

11958839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 169 counting only the distinct ones).

The product of its digits is 77760, while the sum is 44.

The square root of 11958839 is about 3458.1554331753. The cubic root of 11958839 is about 228.6807842982.

The spelling of 11958839 in words is "eleven million, nine hundred fifty-eight thousand, eight hundred thirty-nine".