198746449 has 8 divisors (see below), whose sum is σ = 220905792. Its totient is φ = 177269040.

The previous prime is 198746447. The next prime is 198746453. The reversal of 198746449 is 944647891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198746449 - 2¹ = 198746447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198746396 and 198746405.

It is not an unprimeable number, because it can be changed into a prime (198746447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169869 + ... + 171034.

It is an arithmetic number, because the mean of its divisors is an integer number (27613224).

Almost surely, 2^198746449 is an apocalyptic number.

It is an amenable number.

198746449 is a deficient number, since it is larger than the sum of its proper divisors (22159343).

198746449 is a wasteful number, since it uses less digits than its factorization.

198746449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340967.

The product of its digits is 1741824, while the sum is 52.

The square root of 198746449 is about 14097.7462383177. The cubic root of 198746449 is about 583.5791842787.

It can be divided in two parts, 198 and 746449, that added together give a palindrome (746647).

The spelling of 198746449 in words is "one hundred ninety-eight million, seven hundred forty-six thousand, four hundred forty-nine".