89767649 has 2 divisors, whose sum is σ = 89767650. Its totient is φ = 89767648.

The previous prime is 89767627. The next prime is 89767651. The reversal of 89767649 is 94676798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88830625 + 937024 = 9425^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 89767649 - 2⁸ = 89767393 is a prime.

Together with 89767651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 89767594 and 89767603.

It is not a weakly prime, because it can be changed into another prime (89767669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44883824 + 44883825.

It is an arithmetic number, because the mean of its divisors is an integer number (44883825).

Almost surely, 2^89767649 is an apocalyptic number.

It is an amenable number.

89767649 is a deficient number, since it is larger than the sum of its proper divisors (1).

89767649 is an equidigital number, since it uses as much as digits as its factorization.

89767649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 89767649 is about 9474.5790935534. The cubic root of 89767649 is about 447.7544908681.

The spelling of 89767649 in words is "eighty-nine million, seven hundred sixty-seven thousand, six hundred forty-nine".