198784229 has 12 divisors (see below), whose sum is σ = 232423884. Its totient is φ = 169513344.

The previous prime is 198784217. The next prime is 198784231. The reversal of 198784229 is 922487891.

It can be written as a sum of positive squares in 2 ways, for example, as 194044900 + 4739329 = 13930^2 + 2177^2 .

It is not a de Polignac number, because 198784229 - 2¹⁶ = 198718693 is a prime.

It is a super-3 number, since 3×198784229³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198784249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644 + ... + 19949.

It is an arithmetic number, because the mean of its divisors is an integer number (19368657).

Almost surely, 2^198784229 is an apocalyptic number.

It is an amenable number.

198784229 is a deficient number, since it is larger than the sum of its proper divisors (33639655).

198784229 is a wasteful number, since it uses less digits than its factorization.

198784229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20804 (or 20797 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 198784229 is about 14099.0861051346. The cubic root of 198784229 is about 583.6161597397.

The spelling of 198784229 in words is "one hundred ninety-eight million, seven hundred eighty-four thousand, two hundred twenty-nine".