850885979 has 4 divisors (see below), whose sum is σ = 868989984. Its totient is φ = 832781976.

The previous prime is 850885963. The next prime is 850886017. The reversal of 850885979 is 979588058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979588058 = 2 ⋅489794029.

It is a cyclic number.

It is not a de Polignac number, because 850885979 - 2⁴ = 850885963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850885579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9051932 + ... + 9052025.

It is an arithmetic number, because the mean of its divisors is an integer number (217247496).

Almost surely, 2^850885979 is an apocalyptic number.

850885979 is a deficient number, since it is larger than the sum of its proper divisors (18104005).

850885979 is a wasteful number, since it uses less digits than its factorization.

850885979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18104004.

The product of its (nonzero) digits is 7257600, while the sum is 59.

The square root of 850885979 is about 29169.9499313934. The cubic root of 850885979 is about 947.5972443779.

The spelling of 850885979 in words is "eight hundred fifty million, eight hundred eighty-five thousand, nine hundred seventy-nine".