998992513 has 2 divisors, whose sum is σ = 998992514. Its totient is φ = 998992512.

The previous prime is 998992481. The next prime is 998992529. The reversal of 998992513 is 315299899.

998992513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 989920369 + 9072144 = 31463^2 + 3012^2 .

It is a cyclic number.

It is not a de Polignac number, because 998992513 - 2⁵ = 998992481 is a prime.

It is not a weakly prime, because it can be changed into another prime (998999513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499496256 + 499496257.

It is an arithmetic number, because the mean of its divisors is an integer number (499496257).

Almost surely, 2^998992513 is an apocalyptic number.

It is an amenable number.

998992513 is a deficient number, since it is larger than the sum of its proper divisors (1).

998992513 is an equidigital number, since it uses as much as digits as its factorization.

998992513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 55.

The square root of 998992513 is about 31606.8428192377. The cubic root of 998992513 is about 999.6640581557.

The spelling of 998992513 in words is "nine hundred ninety-eight million, nine hundred ninety-two thousand, five hundred thirteen".