89698549 has 2 divisors, whose sum is σ = 89698550. Its totient is φ = 89698548.

The previous prime is 89698547. The next prime is 89698571. The reversal of 89698549 is 94589698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 43797924 = 6775^2 + 6618^2 .

It is a cyclic number.

It is not a de Polignac number, because 89698549 - 2¹ = 89698547 is a prime.

Together with 89698547, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 89698493 and 89698502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89698547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44849274 + 44849275.

It is an arithmetic number, because the mean of its divisors is an integer number (44849275).

Almost surely, 2^89698549 is an apocalyptic number.

It is an amenable number.

89698549 is a deficient number, since it is larger than the sum of its proper divisors (1).

89698549 is an equidigital number, since it uses as much as digits as its factorization.

89698549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 58.

The square root of 89698549 is about 9470.9317915398. The cubic root of 89698549 is about 447.6395727884.

The spelling of 89698549 in words is "eighty-nine million, six hundred ninety-eight thousand, five hundred forty-nine".