89134579638 has 96 divisors (see below), whose sum is σ = 217619490816. Its totient is φ = 26161527744.

The previous prime is 89134579631. The next prime is 89134579649. The reversal of 89134579638 is 83697543198.

89134579638 is a `hidden beast` number, since 8 + 91 + 3 + 457 + 96 + 3 + 8 = 666.

It is a super-2 number, since 2×89134579638² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89134579631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1952631 + ... + 1997757.

It is an arithmetic number, because the mean of its divisors is an integer number (2266869696).

Almost surely, 2^89134579638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89134579638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108809745408).

89134579638 is an abundant number, since it is smaller than the sum of its proper divisors (128484911178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89134579638 is a wasteful number, since it uses less digits than its factorization.

89134579638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45538 (or 45535 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 89134579638 in words is "eighty-nine billion, one hundred thirty-four million, five hundred seventy-nine thousand, six hundred thirty-eight".