89947297673 has 4 divisors (see below), whose sum is σ = 89975330580. Its totient is φ = 89919264768.

The previous prime is 89947297667. The next prime is 89947297697. The reversal of 89947297673 is 37679274998.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15852824464 + 74094473209 = 125908^2 + 272203^2 .

It is a cyclic number.

It is not a de Polignac number, because 89947297673 - 2²⁰ = 89946249097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89947297597 and 89947297606.

It is not an unprimeable number, because it can be changed into a prime (89947297663) 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, 14011640 + ... + 14018057.

It is an arithmetic number, because the mean of its divisors is an integer number (22493832645).

Almost surely, 2^89947297673 is an apocalyptic number.

It is an amenable number.

89947297673 is a deficient number, since it is larger than the sum of its proper divisors (28032907).

89947297673 is a wasteful number, since it uses less digits than its factorization.

89947297673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28032906.

The product of its digits is 288054144, while the sum is 71.

The spelling of 89947297673 in words is "eighty-nine billion, nine hundred forty-seven million, two hundred ninety-seven thousand, six hundred seventy-three".