4181839 has 2 divisors, whose sum is σ = 4181840. Its totient is φ = 4181838.

The previous prime is 4181819. The next prime is 4181857. The reversal of 4181839 is 9381814.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4181839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4181819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090919 + 2090920.

It is an arithmetic number, because the mean of its divisors is an integer number (2090920).

Almost surely, 2^4181839 is an apocalyptic number.

4181839 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181839 is an equidigital number, since it uses as much as digits as its factorization.

4181839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 4181839 is about 2044.9545227217. The cubic root of 4181839 is about 161.1099771973.

The spelling of 4181839 in words is "four million, one hundred eighty-one thousand, eight hundred thirty-nine".