98724239 has 2 divisors, whose sum is σ = 98724240. Its totient is φ = 98724238.

The previous prime is 98724233. The next prime is 98724281. The reversal of 98724239 is 93242789.

It is a weak prime.

It is an emirp because it is prime and its reverse (93242789) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98724239 is a prime.

It is a super-2 number, since 2×98724239² = 19492950732258242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 98724239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98724233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49362119 + 49362120.

It is an arithmetic number, because the mean of its divisors is an integer number (49362120).

Almost surely, 2^98724239 is an apocalyptic number.

98724239 is a deficient number, since it is larger than the sum of its proper divisors (1).

98724239 is an equidigital number, since it uses as much as digits as its factorization.

98724239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 98724239 is about 9936.0071960521. The cubic root of 98724239 is about 462.1765768069.

The spelling of 98724239 in words is "ninety-eight million, seven hundred twenty-four thousand, two hundred thirty-nine".