998726319 has 12 divisors (see below), whose sum is σ = 1527464016. Its totient is φ = 626651712.

The previous prime is 998726297. The next prime is 998726357. The reversal of 998726319 is 913627899.

It is not a de Polignac number, because 998726319 - 2⁸ = 998726063 is a prime.

It is a super-2 number, since 2×998726319² = 1994908520526579522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998726119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3263659 + ... + 3263964.

It is an arithmetic number, because the mean of its divisors is an integer number (127288668).

Almost surely, 2^998726319 is an apocalyptic number.

998726319 is a deficient number, since it is larger than the sum of its proper divisors (528737697).

998726319 is a wasteful number, since it uses less digits than its factorization.

998726319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527646 (or 6527643 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 998726319 is about 31602.6315201757. The cubic root of 998726319 is about 999.5752592875.

The spelling of 998726319 in words is "nine hundred ninety-eight million, seven hundred twenty-six thousand, three hundred nineteen".