8449685889 has 32 divisors (see below), whose sum is σ = 11727327744. Its totient is φ = 5407933440.

The previous prime is 8449685887. The next prime is 8449685911. The reversal of 8449685889 is 9885869448.

It is not a de Polignac number, because 8449685889 - 2¹ = 8449685887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8449685887) 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, 1805857 + ... + 1810529.

It is an arithmetic number, because the mean of its divisors is an integer number (366478992).

Almost surely, 2^8449685889 is an apocalyptic number.

It is an amenable number.

8449685889 is a deficient number, since it is larger than the sum of its proper divisors (3277641855).

8449685889 is a wasteful number, since it uses less digits than its factorization.

8449685889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957.

The product of its digits is 159252480, while the sum is 69.

The square root of 8449685889 is about 91922.1729997719. The cubic root of 8449685889 is about 2036.7928177913.

The spelling of 8449685889 in words is "eight billion, four hundred forty-nine million, six hundred eighty-five thousand, eight hundred eighty-nine".