850879 has 2 divisors, whose sum is σ = 850880. Its totient is φ = 850878.

The previous prime is 850853. The next prime is 850891. The reversal of 850879 is 978058.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425439 + 425440.

It is an arithmetic number, because the mean of its divisors is an integer number (425440).

2⁸⁵⁰⁸⁷⁹ is an apocalyptic number.

850879 is a deficient number, since it is larger than the sum of its proper divisors (1).

850879 is an equidigital number, since it uses as much as digits as its factorization.

850879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 850879 is about 922.4310272318. The cubic root of 850879 is about 94.7594653628.

The spelling of 850879 in words is "eight hundred fifty thousand, eight hundred seventy-nine".