89667407549 has 2 divisors, whose sum is σ = 89667407550. Its totient is φ = 89667407548.

The previous prime is 89667407491. The next prime is 89667407593. The reversal of 89667407549 is 94570476698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85055639449 + 4611768100 = 291643^2 + 67910^2 .

It is a cyclic number.

It is not a de Polignac number, because 89667407549 - 2³⁶ = 20947930813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89667407449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44833703774 + 44833703775.

It is an arithmetic number, because the mean of its divisors is an integer number (44833703775).

Almost surely, 2^89667407549 is an apocalyptic number.

It is an amenable number.

89667407549 is a deficient number, since it is larger than the sum of its proper divisors (1).

89667407549 is an equidigital number, since it uses as much as digits as its factorization.

89667407549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 89667407549 in words is "eighty-nine billion, six hundred sixty-seven million, four hundred seven thousand, five hundred forty-nine".