383839 has 2 divisors, whose sum is σ = 383840. Its totient is φ = 383838.

The previous prime is 383837. The next prime is 383869. The reversal of 383839 is 938383.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 383839 - 2¹ = 383837 is a prime.

Together with 383837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191919 + 191920.

It is an arithmetic number, because the mean of its divisors is an integer number (191920).

2³⁸³⁸³⁹ is an apocalyptic number.

383839 is a deficient number, since it is larger than the sum of its proper divisors (1).

383839 is an equidigital number, since it uses as much as digits as its factorization.

383839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 383839 is about 619.5474154574. The cubic root of 383839 is about 72.6746640844.

The spelling of 383839 in words is "three hundred eighty-three thousand, eight hundred thirty-nine".