850084978 has 16 divisors (see below), whose sum is σ = 1290749400. Its totient is φ = 419867136.

The previous prime is 850084919. The next prime is 850084979. The reversal of 850084978 is 879480058.

It can be written as a sum of positive squares in 4 ways, for example, as 695007769 + 155077209 = 26363^2 + 12453^2 .

It is not an unprimeable number, because it can be changed into a prime (850084979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46498 + ... + 62146.

Almost surely, 2^850084978 is an apocalyptic number.

850084978 is a deficient number, since it is larger than the sum of its proper divisors (440664422).

850084978 is a wasteful number, since it uses less digits than its factorization.

850084978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15981.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 850084978 is about 29156.2167984806. The cubic root of 850084978 is about 947.2998035694.

The spelling of 850084978 in words is "eight hundred fifty million, eighty-four thousand, nine hundred seventy-eight".