89388644 has 6 divisors (see below), whose sum is σ = 156430134. Its totient is φ = 44694320.

The previous prime is 89388623. The next prime is 89388647. The reversal of 89388644 is 44688398.

It can be written as a sum of positive squares in only one way, i.e., 87198244 + 2190400 = 9338^2 + 1480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 89388592 and 89388601.

It is not an unprimeable number, because it can be changed into a prime (89388647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11173577 + ... + 11173584.

It is an arithmetic number, because the mean of its divisors is an integer number (26071689).

Almost surely, 2^89388644 is an apocalyptic number.

It is an amenable number.

89388644 is a deficient number, since it is larger than the sum of its proper divisors (67041490).

89388644 is a wasteful number, since it uses less digits than its factorization.

89388644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22347165 (or 22347163 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 89388644 is about 9454.5567849582. The cubic root of 89388644 is about 447.1234521646.

The spelling of 89388644 in words is "eighty-nine million, three hundred eighty-eight thousand, six hundred forty-four".