998724229 has 2 divisors, whose sum is σ = 998724230. Its totient is φ = 998724228.

The previous prime is 998724217. The next prime is 998724281. The reversal of 998724229 is 922427899.

998724229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (998724281) can be obtained adding 998724229 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520296100 + 478428129 = 22810^2 + 21873^2 .

It is an emirp because it is prime and its reverse (922427899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998724229 - 2⁹ = 998723717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998728229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499362114 + 499362115.

It is an arithmetic number, because the mean of its divisors is an integer number (499362115).

Almost surely, 2^998724229 is an apocalyptic number.

It is an amenable number.

998724229 is a deficient number, since it is larger than the sum of its proper divisors (1).

998724229 is an equidigital number, since it uses as much as digits as its factorization.

998724229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 998724229 is about 31602.5984532918. The cubic root of 998724229 is about 999.5745620282.

The spelling of 998724229 in words is "nine hundred ninety-eight million, seven hundred twenty-four thousand, two hundred twenty-nine".