89381647 has 2 divisors, whose sum is σ = 89381648. Its totient is φ = 89381646.

The previous prime is 89381641. The next prime is 89381659. The reversal of 89381647 is 74618398.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89381647 - 2¹⁹ = 88857359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89381597 and 89381606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89381641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44690823 + 44690824.

It is an arithmetic number, because the mean of its divisors is an integer number (44690824).

Almost surely, 2^89381647 is an apocalyptic number.

89381647 is a deficient number, since it is larger than the sum of its proper divisors (1).

89381647 is an equidigital number, since it uses as much as digits as its factorization.

89381647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 89381647 is about 9454.1867445064. The cubic root of 89381647 is about 447.1117854909. Note that the first 3 decimals are identical.

It can be divided in two parts, 8938 and 1647, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 89381647 in words is "eighty-nine million, three hundred eighty-one thousand, six hundred forty-seven".