99998429 has 2 divisors, whose sum is σ = 99998430. Its totient is φ = 99998428.

The previous prime is 99998417. The next prime is 99998441. The reversal of 99998429 is 92489999.

It is a balanced prime because it is at equal distance from previous prime (99998417) and next prime (99998441).

It can be written as a sum of positive squares in only one way, i.e., 99400900 + 597529 = 9970^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 99998429 - 2⁴ = 99998413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99998449) 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, 49999214 + 49999215.

It is an arithmetic number, because the mean of its divisors is an integer number (49999215).

Almost surely, 2^99998429 is an apocalyptic number.

It is an amenable number.

99998429 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998429 is an equidigital number, since it uses as much as digits as its factorization.

99998429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 59.

The square root of 99998429 is about 9999.9214496915. The cubic root of 99998429 is about 464.1564527032.

The spelling of 99998429 in words is "ninety-nine million, nine hundred ninety-eight thousand, four hundred twenty-nine".