12161839 has 2 divisors, whose sum is σ = 12161840. Its totient is φ = 12161838.

The previous prime is 12161833. The next prime is 12161867. The reversal of 12161839 is 93816121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12161839 - 2⁷ = 12161711 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12161839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12161833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6080919 + 6080920.

It is an arithmetic number, because the mean of its divisors is an integer number (6080920).

Almost surely, 2^12161839 is an apocalyptic number.

12161839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161839 is an equidigital number, since it uses as much as digits as its factorization.

12161839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 12161839 is about 3487.3828295729. The cubic root of 12161839 is about 229.9674749218.

The spelling of 12161839 in words is "twelve million, one hundred sixty-one thousand, eight hundred thirty-nine".