89216641 has 2 divisors, whose sum is σ = 89216642. Its totient is φ = 89216640.

The previous prime is 89216639. The next prime is 89216671. The reversal of 89216641 is 14661298.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89113600 + 103041 = 9440^2 + 321^2 .

It is a cyclic number.

It is not a de Polignac number, because 89216641 - 2¹ = 89216639 is a prime.

Together with 89216639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 89216641.

It is not a weakly prime, because it can be changed into another prime (89216671) 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 as a sum of consecutive naturals, namely, 44608320 + 44608321.

It is an arithmetic number, because the mean of its divisors is an integer number (44608321).

Almost surely, 2^89216641 is an apocalyptic number.

It is an amenable number.

89216641 is a deficient number, since it is larger than the sum of its proper divisors (1).

89216641 is an equidigital number, since it uses as much as digits as its factorization.

89216641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 89216641 is about 9445.4561033335. The cubic root of 89216641 is about 446.8364807524.

The spelling of 89216641 in words is "eighty-nine million, two hundred sixteen thousand, six hundred forty-one".