8923445981 has 8 divisors (see below), whose sum is σ = 8953023744. Its totient is φ = 8893910160.

The previous prime is 8923445959. The next prime is 8923445983. The reversal of 8923445981 is 1895443298.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8923445981 - 2⁶ = 8923445917 is a prime.

It is a super-2 number, since 2×8923445981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8923445983) 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 7 ways as a sum of consecutive naturals, for example, 448415 + ... + 467891.

It is an arithmetic number, because the mean of its divisors is an integer number (1119127968).

Almost surely, 2^8923445981 is an apocalyptic number.

It is an amenable number.

8923445981 is a deficient number, since it is larger than the sum of its proper divisors (29577763).

8923445981 is a wasteful number, since it uses less digits than its factorization.

8923445981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20971.

The product of its digits is 2488320, while the sum is 53.

The square root of 8923445981 is about 94463.9930396762. The cubic root of 8923445981 is about 2074.1692890750.

The spelling of 8923445981 in words is "eight billion, nine hundred twenty-three million, four hundred forty-five thousand, nine hundred eighty-one".