998072899 has 2 divisors, whose sum is σ = 998072900. Its totient is φ = 998072898.

The previous prime is 998072861. The next prime is 998072909. The reversal of 998072899 is 998270899.

It is a strong prime.

It is an emirp because it is prime and its reverse (998270899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998072899 - 2¹¹ = 998070851 is a prime.

It is a super-2 number, since 2×998072899² = 1992299023436528402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998072819) 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, 499036449 + 499036450.

It is an arithmetic number, because the mean of its divisors is an integer number (499036450).

Almost surely, 2^998072899 is an apocalyptic number.

998072899 is a deficient number, since it is larger than the sum of its proper divisors (1).

998072899 is an equidigital number, since it uses as much as digits as its factorization.

998072899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 61.

The square root of 998072899 is about 31592.2917655557. The cubic root of 998072899 is about 999.3572199223.

The spelling of 998072899 in words is "nine hundred ninety-eight million, seventy-two thousand, eight hundred ninety-nine".