86944527973 has 4 divisors (see below), whose sum is σ = 87173933440. Its totient is φ = 86715122508.

The previous prime is 86944527947. The next prime is 86944528009. The reversal of 86944527973 is 37972544968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86944527973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86944527073) 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, 114702165 + ... + 114702922.

It is an arithmetic number, because the mean of its divisors is an integer number (21793483360).

Almost surely, 2^86944527973 is an apocalyptic number.

It is an amenable number.

86944527973 is a deficient number, since it is larger than the sum of its proper divisors (229405467).

86944527973 is a wasteful number, since it uses less digits than its factorization.

86944527973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229405466.

The product of its digits is 91445760, while the sum is 64.

The spelling of 86944527973 in words is "eighty-six billion, nine hundred forty-four million, five hundred twenty-seven thousand, nine hundred seventy-three".