850804459 has 4 divisors (see below), whose sum is σ = 858333816. Its totient is φ = 843275104.

The previous prime is 850804447. The next prime is 850804501. The reversal of 850804459 is 954408058.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954408058 = 2 ⋅477204029.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850804459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850804429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3764509 + ... + 3764734.

It is an arithmetic number, because the mean of its divisors is an integer number (214583454).

Almost surely, 2^850804459 is an apocalyptic number.

850804459 is a deficient number, since it is larger than the sum of its proper divisors (7529357).

850804459 is a wasteful number, since it uses less digits than its factorization.

850804459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529356.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 850804459 is about 29168.5525695054. The cubic root of 850804459 is about 947.5669815709.

The spelling of 850804459 in words is "eight hundred fifty million, eight hundred four thousand, four hundred fifty-nine".