89881563 has 4 divisors (see below), whose sum is σ = 119842088. Its totient is φ = 59921040.

The previous prime is 89881543. The next prime is 89881577. The reversal of 89881563 is 36518898.

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

It is not a de Polignac number, because 89881563 - 2²⁶ = 22772699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89881513) 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 3 ways as a sum of consecutive naturals, for example, 14980258 + ... + 14980263.

It is an arithmetic number, because the mean of its divisors is an integer number (29960522).

Almost surely, 2^89881563 is an apocalyptic number.

89881563 is a deficient number, since it is larger than the sum of its proper divisors (29960525).

89881563 is a wasteful number, since it uses less digits than its factorization.

89881563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29960524.

The product of its digits is 414720, while the sum is 48.

The square root of 89881563 is about 9480.5887475409. The cubic root of 89881563 is about 447.9438090531.

The spelling of 89881563 in words is "eighty-nine million, eight hundred eighty-one thousand, five hundred sixty-three".