89477191121 has 4 divisors (see below), whose sum is σ = 89478011700. Its totient is φ = 89476370544.

The previous prime is 89477191073. The next prime is 89477191123. The reversal of 89477191121 is 12119177498.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 53217414721 + 36259776400 = 230689^2 + 190420^2 .

It is a cyclic number.

It is not a de Polignac number, because 89477191121 - 2¹⁰ = 89477190097 is a prime.

It is a super-2 number, since 2×89477191121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89477191121.

It is not an unprimeable number, because it can be changed into a prime (89477191123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216086 + ... + 475023.

It is an arithmetic number, because the mean of its divisors is an integer number (22369502925).

Almost surely, 2^89477191121 is an apocalyptic number.

It is an amenable number.

89477191121 is a deficient number, since it is larger than the sum of its proper divisors (820579).

89477191121 is a wasteful number, since it uses less digits than its factorization.

89477191121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820578.

The product of its digits is 254016, while the sum is 50.

The spelling of 89477191121 in words is "eighty-nine billion, four hundred seventy-seven million, one hundred ninety-one thousand, one hundred twenty-one".