89105503879 has 24 divisors (see below), whose sum is σ = 104416374768. Its totient is φ = 75815066880.

The previous prime is 89105503841. The next prime is 89105503901. The reversal of 89105503879 is 97830550198.

It is not a de Polignac number, because 89105503879 - 2¹⁵ = 89105471111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89105503819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6998239 + ... + 7010959.

It is an arithmetic number, because the mean of its divisors is an integer number (4350682282).

Almost surely, 2^89105503879 is an apocalyptic number.

89105503879 is a deficient number, since it is larger than the sum of its proper divisors (15310870889).

89105503879 is a wasteful number, since it uses less digits than its factorization.

89105503879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13775 (or 13768 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 89105503879 in words is "eighty-nine billion, one hundred five million, five hundred three thousand, eight hundred seventy-nine".