709879 has 2 divisors, whose sum is σ = 709880. Its totient is φ = 709878.

The previous prime is 709871. The next prime is 709901. The reversal of 709879 is 978907.

It is a weak prime.

It is an emirp because it is prime and its reverse (978907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 709879 - 2³ = 709871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354939 + 354940.

It is an arithmetic number, because the mean of its divisors is an integer number (354940).

2⁷⁰⁹⁸⁷⁹ is an apocalyptic number.

709879 is a deficient number, since it is larger than the sum of its proper divisors (1).

709879 is an equidigital number, since it uses as much as digits as its factorization.

709879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 709879 is about 842.5431739680. The cubic root of 709879 is about 89.2061458896.

The spelling of 709879 in words is "seven hundred nine thousand, eight hundred seventy-nine".