85703879 has 2 divisors, whose sum is σ = 85703880. Its totient is φ = 85703878.

The previous prime is 85703873. The next prime is 85703881. The reversal of 85703879 is 97830758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85703879 - 2²⁰ = 84655303 is a prime.

Together with 85703881, 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 (85703873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42851939 + 42851940.

It is an arithmetic number, because the mean of its divisors is an integer number (42851940).

Almost surely, 2^85703879 is an apocalyptic number.

85703879 is a deficient number, since it is larger than the sum of its proper divisors (1).

85703879 is an equidigital number, since it uses as much as digits as its factorization.

85703879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 85703879 is about 9257.6389538586. The cubic root of 85703879 is about 440.8932936674.

The spelling of 85703879 in words is "eighty-five million, seven hundred three thousand, eight hundred seventy-nine".