839164461940 has 96 divisors (see below), whose sum is σ = 2078051834880. Its totient is φ = 278688743424.

The previous prime is 839164461923. The next prime is 839164461973. The reversal of 839164461940 is 49164461938.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19125 + ... + 1295644.

It is an arithmetic number, because the mean of its divisors is an integer number (21646373280).

Almost surely, 2^839164461940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 839164461940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039025917440).

839164461940 is an abundant number, since it is smaller than the sum of its proper divisors (1238887372940).

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

839164461940 is a wasteful number, since it uses less digits than its factorization.

839164461940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314929 (or 1314927 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 839164461940 in words is "eight hundred thirty-nine billion, one hundred sixty-four million, four hundred sixty-one thousand, nine hundred forty".