84623853847 has 24 divisors (see below), whose sum is σ = 94734549888. Its totient is φ = 75479040000.

The previous prime is 84623853841. The next prime is 84623853857. The reversal of 84623853847 is 74835832648.

It is a happy number.

It is not a de Polignac number, because 84623853847 - 2³⁵ = 50264115479 is a prime.

It is a super-2 number, since 2×84623853847² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84623853791 and 84623853800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84623853841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3513847 + ... + 3537847.

It is an arithmetic number, because the mean of its divisors is an integer number (3947272912).

Almost surely, 2^84623853847 is an apocalyptic number.

84623853847 is a deficient number, since it is larger than the sum of its proper divisors (10110696041).

84623853847 is a wasteful number, since it uses less digits than its factorization.

84623853847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24731 (or 24718 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 58.

The spelling of 84623853847 in words is "eighty-four billion, six hundred twenty-three million, eight hundred fifty-three thousand, eight hundred forty-seven".