89131878 has 24 divisors (see below), whose sum is σ = 210675816. Its totient is φ = 27009600.

The previous prime is 89131871. The next prime is 89131891. The reversal of 89131878 is 87813198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89131871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224883 + ... + 225278.

It is an arithmetic number, because the mean of its divisors is an integer number (8778159).

Almost surely, 2^89131878 is an apocalyptic number.

89131878 is an abundant number, since it is smaller than the sum of its proper divisors (121543938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89131878 is a wasteful number, since it uses less digits than its factorization.

89131878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450180 (or 450177 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 89131878 is about 9440.9680647696. The cubic root of 89131878 is about 446.6949256892.

It can be divided in two parts, 89131 and 878, that added together give a palindrome (90009).

The spelling of 89131878 in words is "eighty-nine million, one hundred thirty-one thousand, eight hundred seventy-eight".