84079382717 has 4 divisors (see below), whose sum is σ = 91722962976. Its totient is φ = 76435802460.

The previous prime is 84079382687. The next prime is 84079382741. The reversal of 84079382717 is 71728397048.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84079382717 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 (84079382617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3821790113 + ... + 3821790134.

It is an arithmetic number, because the mean of its divisors is an integer number (22930740744).

Almost surely, 2^84079382717 is an apocalyptic number.

It is an amenable number.

84079382717 is a deficient number, since it is larger than the sum of its proper divisors (7643580259).

84079382717 is a wasteful number, since it uses less digits than its factorization.

84079382717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7643580258.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 84079382717 in words is "eighty-four billion, seventy-nine million, three hundred eighty-two thousand, seven hundred seventeen".