8343921783 has 16 divisors (see below), whose sum is σ = 11361252992. Its totient is φ = 5445468000.

The previous prime is 8343921779. The next prime is 8343921829. The reversal of 8343921783 is 3871293438.

It is not a de Polignac number, because 8343921783 - 2² = 8343921779 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 (8343921743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69433 + ... + 146658.

It is an arithmetic number, because the mean of its divisors is an integer number (710078312).

Almost surely, 2^8343921783 is an apocalyptic number.

8343921783 is a deficient number, since it is larger than the sum of its proper divisors (3017331209).

8343921783 is a wasteful number, since it uses less digits than its factorization.

8343921783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216366.

The product of its digits is 870912, while the sum is 48.

The square root of 8343921783 is about 91345.0698341186. The cubic root of 8343921783 is about 2028.2589829594.

The spelling of 8343921783 in words is "eight billion, three hundred forty-three million, nine hundred twenty-one thousand, seven hundred eighty-three".