84831534839 has 4 divisors (see below), whose sum is σ = 86222215800. Its totient is φ = 83440853880.

The previous prime is 84831534797. The next prime is 84831534901. The reversal of 84831534839 is 93843513848.

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 84831534839 - 2²⁰ = 84830486263 is a prime.

It is a super-3 number, since 3×84831534839³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84831534439) 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, 695340389 + ... + 695340510.

It is an arithmetic number, because the mean of its divisors is an integer number (21555553950).

Almost surely, 2^84831534839 is an apocalyptic number.

84831534839 is a deficient number, since it is larger than the sum of its proper divisors (1390680961).

84831534839 is a wasteful number, since it uses less digits than its factorization.

84831534839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390680960.

The product of its digits is 9953280, while the sum is 56.

The spelling of 84831534839 in words is "eighty-four billion, eight hundred thirty-one million, five hundred thirty-four thousand, eight hundred thirty-nine".