840959317 has 12 divisors (see below), whose sum is σ = 930502048. Its totient is φ = 759429000.

The previous prime is 840959291. The next prime is 840959333. The reversal of 840959317 is 713959048.

It is a happy number.

It is not a de Polignac number, because 840959317 - 2¹¹ = 840957269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840959377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4743 + ... + 41284.

Almost surely, 2^840959317 is an apocalyptic number.

It is an amenable number.

840959317 is a deficient number, since it is larger than the sum of its proper divisors (89542731).

840959317 is a wasteful number, since it uses less digits than its factorization.

840959317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46200 (or 46189 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 840959317 is about 28999.2985604825. The cubic root of 840959317 is about 943.8978470359.

The spelling of 840959317 in words is "eight hundred forty million, nine hundred fifty-nine thousand, three hundred seventeen".