708839 has 2 divisors, whose sum is σ = 708840. Its totient is φ = 708838.

The previous prime is 708823. The next prime is 708857. The reversal of 708839 is 938807.

It is a weak prime.

It is an emirp because it is prime and its reverse (938807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 708839 - 2⁴ = 708823 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 708799 and 708808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (708859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354419 + 354420.

It is an arithmetic number, because the mean of its divisors is an integer number (354420).

2⁷⁰⁸⁸³⁹ is an apocalyptic number.

708839 is a deficient number, since it is larger than the sum of its proper divisors (1).

708839 is an equidigital number, since it uses as much as digits as its factorization.

708839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 708839 is about 841.9257686994. The cubic root of 708839 is about 89.1625611215.

The spelling of 708839 in words is "seven hundred eight thousand, eight hundred thirty-nine".