89390549 has 2 divisors, whose sum is σ = 89390550. Its totient is φ = 89390548.

The previous prime is 89390527. The next prime is 89390551. The reversal of 89390549 is 94509398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63888049 + 25502500 = 7993^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 89390549 - 2¹⁶ = 89325013 is a prime.

Together with 89390551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89390149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44695274 + 44695275.

It is an arithmetic number, because the mean of its divisors is an integer number (44695275).

Almost surely, 2^89390549 is an apocalyptic number.

It is an amenable number.

89390549 is a deficient number, since it is larger than the sum of its proper divisors (1).

89390549 is an equidigital number, since it uses as much as digits as its factorization.

89390549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 89390549 is about 9454.6575294931. The cubic root of 89390549 is about 447.1266284224.

The spelling of 89390549 in words is "eighty-nine million, three hundred ninety thousand, five hundred forty-nine".