12158839 has 8 divisors (see below), whose sum is σ = 15159168. Its totient is φ = 9474360.

The previous prime is 12158813. The next prime is 12158849. The reversal of 12158839 is 93885121.

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

It is not a de Polignac number, because 12158839 - 2⁷ = 12158711 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 12158798 and 12158807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12158849) 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, 78877 + ... + 79030.

It is an arithmetic number, because the mean of its divisors is an integer number (1894896).

Almost surely, 2^12158839 is an apocalyptic number.

12158839 is a deficient number, since it is larger than the sum of its proper divisors (3000329).

12158839 is a wasteful number, since it uses less digits than its factorization.

12158839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157925.

The product of its digits is 17280, while the sum is 37.

The square root of 12158839 is about 3486.9526810670. The cubic root of 12158839 is about 229.9485644276.

It can be divided in two parts, 12 and 158839, that added together give a palindrome (158851).

The spelling of 12158839 in words is "twelve million, one hundred fifty-eight thousand, eight hundred thirty-nine".