8981339881 has 4 divisors (see below), whose sum is σ = 9454042000. Its totient is φ = 8508637764.

The previous prime is 8981339863. The next prime is 8981339893. The reversal of 8981339881 is 1889331898.

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 not a de Polignac number, because 8981339881 - 2⁵ = 8981339849 is a prime.

It is a super-2 number, since 2×8981339881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8981339821) 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, 236351031 + ... + 236351068.

It is an arithmetic number, because the mean of its divisors is an integer number (2363510500).

Almost surely, 2^8981339881 is an apocalyptic number.

It is an amenable number.

8981339881 is a deficient number, since it is larger than the sum of its proper divisors (472702119).

8981339881 is a wasteful number, since it uses less digits than its factorization.

8981339881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472702118.

The product of its digits is 2985984, while the sum is 58.

The square root of 8981339881 is about 94769.9313126268. The cubic root of 8981339881 is about 2078.6452501634.

The spelling of 8981339881 in words is "eight billion, nine hundred eighty-one million, three hundred thirty-nine thousand, eight hundred eighty-one".