63839 has 2 divisors, whose sum is σ = 63840. Its totient is φ = 63838.

The previous prime is 63823. The next prime is 63841. The reversal of 63839 is 93836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63839 - 2⁴ = 63823 is a prime.

It is a Sophie Germain prime.

Together with 63841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31919 + 31920.

It is an arithmetic number, because the mean of its divisors is an integer number (31920).

2⁶³⁸³⁹ is an apocalyptic number.

63839 is a deficient number, since it is larger than the sum of its proper divisors (1).

63839 is an equidigital number, since it uses as much as digits as its factorization.

63839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 63839 is about 252.6638082512. The cubic root of 63839 is about 39.9664301679.

The spelling of 63839 in words is "sixty-three thousand, eight hundred thirty-nine".