198398029 has 2 divisors, whose sum is σ = 198398030. Its totient is φ = 198398028.

The previous prime is 198397987. The next prime is 198398111. The reversal of 198398029 is 920893891.

198398029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189695529 + 8702500 = 13773^2 + 2950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198398029 is a prime.

It is a super-2 number, since 2×198398029² = 78723555822169682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198390029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99199014 + 99199015.

It is an arithmetic number, because the mean of its divisors is an integer number (99199015).

Almost surely, 2^198398029 is an apocalyptic number.

It is an amenable number.

198398029 is a deficient number, since it is larger than the sum of its proper divisors (1).

198398029 is an equidigital number, since it uses as much as digits as its factorization.

198398029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 198398029 is about 14085.3835233550. The cubic root of 198398029 is about 583.2379629301.

The spelling of 198398029 in words is "one hundred ninety-eight million, three hundred ninety-eight thousand, twenty-nine".