840199417 has 12 divisors (see below), whose sum is σ = 876397968. Its totient is φ = 805398600.

The previous prime is 840199391. The next prime is 840199463. The reversal of 840199417 is 714991048.

840199417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840199417 - 2²³ = 831810809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840199487) 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, 98742 + ... + 106912.

It is an arithmetic number, because the mean of its divisors is an integer number (73033164).

Almost surely, 2^840199417 is an apocalyptic number.

It is an amenable number.

840199417 is a deficient number, since it is larger than the sum of its proper divisors (36198551).

840199417 is a wasteful number, since it uses less digits than its factorization.

840199417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340 (or 8309 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 840199417 is about 28986.1935583132. The cubic root of 840199417 is about 943.6134559000.

The spelling of 840199417 in words is "eight hundred forty million, one hundred ninety-nine thousand, four hundred seventeen".