8104345639 has 8 divisors (see below), whose sum is σ = 8773454592. Its totient is φ = 7441764960.

The previous prime is 8104345549. The next prime is 8104345673. The reversal of 8104345639 is 9365434018.

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

It is a cyclic number.

It is not a de Polignac number, because 8104345639 - 2⁹ = 8104345127 is a prime.

It is a super-3 number, since 3×8104345639³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8104345595 and 8104345604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8104345679) 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, 1629484 + ... + 1634449.

It is an arithmetic number, because the mean of its divisors is an integer number (1096681824).

Almost surely, 2^8104345639 is an apocalyptic number.

8104345639 is a deficient number, since it is larger than the sum of its proper divisors (669108953).

8104345639 is a wasteful number, since it uses less digits than its factorization.

8104345639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264137.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 8104345639 is about 90024.1392016608. The cubic root of 8104345639 is about 2008.6579359065.

The spelling of 8104345639 in words is "eight billion, one hundred four million, three hundred forty-five thousand, six hundred thirty-nine".