840850506 has 12 divisors (see below), whose sum is σ = 1821842802. Its totient is φ = 280283496.

The previous prime is 840850499. The next prime is 840850519. The reversal of 840850506 is 605058048.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 803212281 + 37638225 = 28341^2 + 6135^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23356941 + ... + 23356976.

Almost surely, 2^840850506 is an apocalyptic number.

840850506 is an abundant number, since it is smaller than the sum of its proper divisors (980992296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840850506 is a wasteful number, since it uses less digits than its factorization.

840850506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46713925 (or 46713922 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 840850506 is about 28997.4224026895. The cubic root of 840850506 is about 943.8571352374.

The spelling of 840850506 in words is "eight hundred forty million, eight hundred fifty thousand, five hundred six".