8921612973 has 32 divisors (see below), whose sum is σ = 14684190976. Its totient is φ = 4691893248.

The previous prime is 8921612969. The next prime is 8921613017. The reversal of 8921612973 is 3792161298.

It is not a de Polignac number, because 8921612973 - 2² = 8921612969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921612473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43515 + ... + 140487.

It is an arithmetic number, because the mean of its divisors is an integer number (458880968).

Almost surely, 2^8921612973 is an apocalyptic number.

It is an amenable number.

8921612973 is a deficient number, since it is larger than the sum of its proper divisors (5762578003).

8921612973 is a wasteful number, since it uses less digits than its factorization.

8921612973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97333.

The product of its digits is 326592, while the sum is 48.

The square root of 8921612973 is about 94454.2903895847. The cubic root of 8921612973 is about 2074.0272576496.

The spelling of 8921612973 in words is "eight billion, nine hundred twenty-one million, six hundred twelve thousand, nine hundred seventy-three".