84394286531 has 4 divisors (see below), whose sum is σ = 86675213232. Its totient is φ = 82113359832.

The previous prime is 84394286521. The next prime is 84394286563. The reversal of 84394286531 is 13568249348.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84394286531 is a prime.

It is a super-2 number, since 2×84394286531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84394286521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140463295 + ... + 1140463368.

It is an arithmetic number, because the mean of its divisors is an integer number (21668803308).

Almost surely, 2^84394286531 is an apocalyptic number.

84394286531 is a deficient number, since it is larger than the sum of its proper divisors (2280926701).

84394286531 is a wasteful number, since it uses less digits than its factorization.

84394286531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280926700.

The product of its digits is 4976640, while the sum is 53.

The spelling of 84394286531 in words is "eighty-four billion, three hundred ninety-four million, two hundred eighty-six thousand, five hundred thirty-one".