98643439 has 2 divisors, whose sum is σ = 98643440. Its totient is φ = 98643438.

The previous prime is 98643427. The next prime is 98643487. The reversal of 98643439 is 93434689.

It is a weak prime.

It is an emirp because it is prime and its reverse (93434689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98643439 - 2¹⁵ = 98610671 is a prime.

It is a congruent number.

It is a weakly prime.

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, 49321719 + 49321720.

It is an arithmetic number, because the mean of its divisors is an integer number (49321720).

Almost surely, 2^98643439 is an apocalyptic number.

98643439 is a deficient number, since it is larger than the sum of its proper divisors (1).

98643439 is an equidigital number, since it uses as much as digits as its factorization.

98643439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 46.

The square root of 98643439 is about 9931.9403441624. The cubic root of 98643439 is about 462.0504542513.

The spelling of 98643439 in words is "ninety-eight million, six hundred forty-three thousand, four hundred thirty-nine".