998693429 has 2 divisors, whose sum is σ = 998693430. Its totient is φ = 998693428.

The previous prime is 998693369. The next prime is 998693453. The reversal of 998693429 is 924396899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985018225 + 13675204 = 31385^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 998693429 - 2²⁰ = 997644853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998695429) 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, 499346714 + 499346715.

It is an arithmetic number, because the mean of its divisors is an integer number (499346715).

Almost surely, 2^998693429 is an apocalyptic number.

It is an amenable number.

998693429 is a deficient number, since it is larger than the sum of its proper divisors (1).

998693429 is an equidigital number, since it uses as much as digits as its factorization.

998693429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 59.

The square root of 998693429 is about 31602.1111478331. Note that the first 4 decimals coincide. The cubic root of 998693429 is about 999.5642865147.

The spelling of 998693429 in words is "nine hundred ninety-eight million, six hundred ninety-three thousand, four hundred twenty-nine".