84958865139 has 4 divisors (see below), whose sum is σ = 113278486856. Its totient is φ = 56639243424.

The previous prime is 84958865137. The next prime is 84958865149. The reversal of 84958865139 is 93156885948.

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

It is not a de Polignac number, because 84958865139 - 2¹ = 84958865137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84958865139.

It is not an unprimeable number, because it can be changed into a prime (84958865137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14159810854 + ... + 14159810859.

It is an arithmetic number, because the mean of its divisors is an integer number (28319621714).

Almost surely, 2^84958865139 is an apocalyptic number.

84958865139 is a deficient number, since it is larger than the sum of its proper divisors (28319621717).

84958865139 is a wasteful number, since it uses less digits than its factorization.

84958865139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28319621716.

The product of its digits is 74649600, while the sum is 66.

The spelling of 84958865139 in words is "eighty-four billion, nine hundred fifty-eight million, eight hundred sixty-five thousand, one hundred thirty-nine".