89789872547 has 4 divisors (see below), whose sum is σ = 90003150576. Its totient is φ = 89576594520.

The previous prime is 89789872541. The next prime is 89789872607. The reversal of 89789872547 is 74527898798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89789872547 - 2⁶ = 89789872483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89789872541) 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, 106638383 + ... + 106639224.

It is an arithmetic number, because the mean of its divisors is an integer number (22500787644).

Almost surely, 2^89789872547 is an apocalyptic number.

89789872547 is a deficient number, since it is larger than the sum of its proper divisors (213278029).

89789872547 is a wasteful number, since it uses less digits than its factorization.

89789872547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213278028.

The product of its digits is 568995840, while the sum is 74.

The spelling of 89789872547 in words is "eighty-nine billion, seven hundred eighty-nine million, eight hundred seventy-two thousand, five hundred forty-seven".