998212429 has 2 divisors, whose sum is σ = 998212430. Its totient is φ = 998212428.

The previous prime is 998212421. The next prime is 998212469. The reversal of 998212429 is 924212899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982822500 + 15389929 = 31350^2 + 3923^2 .

It is a cyclic number.

It is not a de Polignac number, because 998212429 - 2³ = 998212421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998212421) 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 as a sum of consecutive naturals, namely, 499106214 + 499106215.

It is an arithmetic number, because the mean of its divisors is an integer number (499106215).

Almost surely, 2^998212429 is an apocalyptic number.

It is an amenable number.

998212429 is a deficient number, since it is larger than the sum of its proper divisors (1).

998212429 is an equidigital number, since it uses as much as digits as its factorization.

998212429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 998212429 is about 31594.4999802181. The cubic root of 998212429 is about 999.4037876014.

The spelling of 998212429 in words is "nine hundred ninety-eight million, two hundred twelve thousand, four hundred twenty-nine".