89898649 has 2 divisors, whose sum is σ = 89898650. Its totient is φ = 89898648.

The previous prime is 89898617. The next prime is 89898673. The reversal of 89898649 is 94689898.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86025625 + 3873024 = 9275^2 + 1968^2 .

It is a cyclic number.

It is not a de Polignac number, because 89898649 - 2⁵ = 89898617 is a prime.

It is not a weakly prime, because it can be changed into another prime (89898349) 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, 44949324 + 44949325.

It is an arithmetic number, because the mean of its divisors is an integer number (44949325).

Almost surely, 2^89898649 is an apocalyptic number.

It is an amenable number.

89898649 is a deficient number, since it is larger than the sum of its proper divisors (1).

89898649 is an equidigital number, since it uses as much as digits as its factorization.

89898649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 61.

The square root of 89898649 is about 9481.4898090965. The cubic root of 89898649 is about 447.9721911549.

The spelling of 89898649 in words is "eighty-nine million, eight hundred ninety-eight thousand, six hundred forty-nine".