8489963881 has 9 divisors (see below), whose sum is σ = 9876830781. Its totient is φ = 7276559052.

The previous prime is 8489963873. The next prime is 8489963921. The reversal of 8489963881 is 1883699848.

The square root of 8489963881 is 92141.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8489963881 - 2³ = 8489963873 is a prime.

It is a super-2 number, since 2×8489963881² (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 (8489963861) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 638406 + ... + 651568.

Almost surely, 2^8489963881 is an apocalyptic number.

8489963881 is the 92141-st square number.

8489963881 is the 46071-st centered octagonal number.

It is an amenable number.

8489963881 is a deficient number, since it is larger than the sum of its proper divisors (1386866900).

8489963881 is an frugal number, since it uses more digits than its factorization.

8489963881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26340 (or 13170 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 64.

The cubic root of 8489963881 is about 2040.0240194051.

Multiplying 8489963881 by its sum of digits (64), we get a square (543357688384 = 737128²).

The spelling of 8489963881 in words is "eight billion, four hundred eighty-nine million, nine hundred sixty-three thousand, eight hundred eighty-one".