89789789873 has 4 divisors (see below), whose sum is σ = 102616902720. Its totient is φ = 76962677028.

The previous prime is 89789789863. The next prime is 89789789891. The reversal of 89789789873 is 37898798798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89789789873 - 2¹² = 89789785777 is a prime.

It is a super-2 number, since 2×89789789873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89789789791 and 89789789800.

It is not an unprimeable number, because it can be changed into a prime (89789789863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6413556413 + ... + 6413556426.

It is an arithmetic number, because the mean of its divisors is an integer number (25654225680).

Almost surely, 2^89789789873 is an apocalyptic number.

It is an amenable number.

89789789873 is a deficient number, since it is larger than the sum of its proper divisors (12827112847).

89789789873 is a wasteful number, since it uses less digits than its factorization.

89789789873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827112846.

The product of its digits is 3072577536, while the sum is 83.

The spelling of 89789789873 in words is "eighty-nine billion, seven hundred eighty-nine million, seven hundred eighty-nine thousand, eight hundred seventy-three".