2136839 has 2 divisors, whose sum is σ = 2136840. Its totient is φ = 2136838.

The previous prime is 2136833. The next prime is 2136853. The reversal of 2136839 is 9386312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2136839 - 2⁸ = 2136583 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2136833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068419 + 1068420.

It is an arithmetic number, because the mean of its divisors is an integer number (1068420).

2^2136839 is an apocalyptic number.

2136839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136839 is an equidigital number, since it uses as much as digits as its factorization.

2136839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 2136839 is about 1461.7930770119. The cubic root of 2136839 is about 128.8023936067.

The spelling of 2136839 in words is "two million, one hundred thirty-six thousand, eight hundred thirty-nine".