84623931547 has 16 divisors (see below), whose sum is σ = 86707232640. Its totient is φ = 82569825792.

The previous prime is 84623931529. The next prime is 84623931563. The reversal of 84623931547 is 74513932648.

It is a happy number.

It is not a de Polignac number, because 84623931547 - 2⁷ = 84623931419 is a prime.

It is a super-2 number, since 2×84623931547² (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 = 84623931494 and 84623931503.

It is not an unprimeable number, because it can be changed into a prime (84623931577) 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 15 ways as a sum of consecutive naturals, for example, 2915854 + ... + 2944732.

It is an arithmetic number, because the mean of its divisors is an integer number (5419202040).

Almost surely, 2^84623931547 is an apocalyptic number.

84623931547 is a deficient number, since it is larger than the sum of its proper divisors (2083301093).

84623931547 is a wasteful number, since it uses less digits than its factorization.

84623931547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29382.

The product of its digits is 4354560, while the sum is 52.

The spelling of 84623931547 in words is "eighty-four billion, six hundred twenty-three million, nine hundred thirty-one thousand, five hundred forty-seven".