840041346939 has 8 divisors (see below), whose sum is σ = 1120144848192. Its totient is φ = 559982705160.

The previous prime is 840041346923. The next prime is 840041346941. The reversal of 840041346939 is 939643140048.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 840041346939 - 2⁴ = 840041346923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 840041346891 and 840041346900.

It is not an unprimeable number, because it can be changed into a prime (840041346979) 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, 11171149 + ... + 11246094.

It is an arithmetic number, because the mean of its divisors is an integer number (140018106024).

Almost surely, 2^840041346939 is an apocalyptic number.

840041346939 is a deficient number, since it is larger than the sum of its proper divisors (280103501253).

840041346939 is a wasteful number, since it uses less digits than its factorization.

840041346939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22429737.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 840041346939 in words is "eight hundred forty billion, forty-one million, three hundred forty-six thousand, nine hundred thirty-nine".