998724499 has 2 divisors, whose sum is σ = 998724500. Its totient is φ = 998724498.

The previous prime is 998724497. The next prime is 998724509. The reversal of 998724499 is 994427899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998724499 - 2¹ = 998724497 is a prime.

Together with 998724497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (998724497) 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, 499362249 + 499362250.

It is an arithmetic number, because the mean of its divisors is an integer number (499362250).

Almost surely, 2^998724499 is an apocalyptic number.

998724499 is a deficient number, since it is larger than the sum of its proper divisors (1).

998724499 is an equidigital number, since it uses as much as digits as its factorization.

998724499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 61.

The square root of 998724499 is about 31602.6027250921. The cubic root of 998724499 is about 999.5746521048.

The spelling of 998724499 in words is "nine hundred ninety-eight million, seven hundred twenty-four thousand, four hundred ninety-nine".