89655484989 has 96 divisors (see below), whose sum is σ = 145756766208. Its totient is φ = 47994249600.

The previous prime is 89655484987. The next prime is 89655484999. The reversal of 89655484989 is 98948455698.

It is not a de Polignac number, because 89655484989 - 2¹ = 89655484987 is a prime.

It is a super-4 number, since 4×89655484989⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 89655484989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89655484981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 82479204 + ... + 82480290.

It is an arithmetic number, because the mean of its divisors is an integer number (1518299648).

Almost surely, 2^89655484989 is an apocalyptic number.

It is an amenable number.

89655484989 is a deficient number, since it is larger than the sum of its proper divisors (56101281219).

89655484989 is a wasteful number, since it uses less digits than its factorization.

89655484989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287 (or 1256 counting only the distinct ones).

The product of its digits is 895795200, while the sum is 75.

The spelling of 89655484989 in words is "eighty-nine billion, six hundred fifty-five million, four hundred eighty-four thousand, nine hundred eighty-nine".