840812276 has 6 divisors (see below), whose sum is σ = 1471421490. Its totient is φ = 420406136.

The previous prime is 840812267. The next prime is 840812303. The reversal of 840812276 is 672218048.

It can be written as a sum of positive squares in only one way, i.e., 723610000 + 117202276 = 26900^2 + 10826^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101531 + ... + 105101538.

It is an arithmetic number, because the mean of its divisors is an integer number (245236915).

Almost surely, 2^840812276 is an apocalyptic number.

It is an amenable number.

840812276 is a deficient number, since it is larger than the sum of its proper divisors (630609214).

840812276 is a wasteful number, since it uses less digits than its factorization.

840812276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210203073 (or 210203071 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 840812276 is about 28996.7631986744. The cubic root of 840812276 is about 943.8428305920.

The spelling of 840812276 in words is "eight hundred forty million, eight hundred twelve thousand, two hundred seventy-six".