89686144 has 16 divisors (see below), whose sum is σ = 178671870. Its totient is φ = 44843008.

The previous prime is 89686139. The next prime is 89686249. The reversal of 89686144 is 44168698.

It can be written as a sum of positive squares in only one way, i.e., 72046144 + 17640000 = 8488^2 + 4200^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 89686094 and 89686103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350209 + ... + 350464.

Almost surely, 2^89686144 is an apocalyptic number.

It is an amenable number.

89686144 is a deficient number, since it is larger than the sum of its proper divisors (88985726).

89686144 is an equidigital number, since it uses as much as digits as its factorization.

89686144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700687 (or 700675 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 89686144 is about 9470.2768702927. The cubic root of 89686144 is about 447.6189361673.

The spelling of 89686144 in words is "eighty-nine million, six hundred eighty-six thousand, one hundred forty-four".