84538679 has 4 divisors (see below), whose sum is σ = 86600640. Its totient is φ = 82476720.

The previous prime is 84538661. The next prime is 84538723. The reversal of 84538679 is 97683548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84538679 - 2⁸ = 84538423 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 (84538079) 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, 1030919 + ... + 1031000.

It is an arithmetic number, because the mean of its divisors is an integer number (21650160).

Almost surely, 2^84538679 is an apocalyptic number.

84538679 is a deficient number, since it is larger than the sum of its proper divisors (2061961).

84538679 is a wasteful number, since it uses less digits than its factorization.

84538679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061960.

The product of its digits is 1451520, while the sum is 50.

The square root of 84538679 is about 9194.4917749705. The cubic root of 84538679 is about 438.8860925267.

The spelling of 84538679 in words is "eighty-four million, five hundred thirty-eight thousand, six hundred seventy-nine".