3998366429 has 2 divisors, whose sum is σ = 3998366430. Its totient is φ = 3998366428.

The previous prime is 3998366399. The next prime is 3998366431. The reversal of 3998366429 is 9246638993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3959303929 + 39062500 = 62923^2 + 6250^2 .

It is an emirp because it is prime and its reverse (9246638993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3998366429 - 2¹⁶ = 3998300893 is a prime.

Together with 3998366431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3998365429) 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, 1999183214 + 1999183215.

It is an arithmetic number, because the mean of its divisors is an integer number (1999183215).

Almost surely, 2^3998366429 is an apocalyptic number.

It is an amenable number.

3998366429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998366429 is an equidigital number, since it uses as much as digits as its factorization.

3998366429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15116544, while the sum is 59.

The square root of 3998366429 is about 63232.6373718509. The cubic root of 3998366429 is about 1587.1849281841.

The spelling of 3998366429 in words is "three billion, nine hundred ninety-eight million, three hundred sixty-six thousand, four hundred twenty-nine".