198459847 has 16 divisors (see below), whose sum is σ = 215317440. Its totient is φ = 182355712.

The previous prime is 198459809. The next prime is 198459851. The reversal of 198459847 is 748954891.

It is a happy number.

198459847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198459847 - 2²³ = 190071239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198859847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154773 + ... + 156049.

It is an arithmetic number, because the mean of its divisors is an integer number (13457340).

Almost surely, 2^198459847 is an apocalyptic number.

198459847 is a deficient number, since it is larger than the sum of its proper divisors (16857593).

198459847 is a wasteful number, since it uses less digits than its factorization.

198459847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 2903040, while the sum is 55.

The square root of 198459847 is about 14087.5777548875. The cubic root of 198459847 is about 583.2985328536.

It can be divided in two parts, 19845 and 9847, that added together give a palindrome (29692).

The spelling of 198459847 in words is "one hundred ninety-eight million, four hundred fifty-nine thousand, eight hundred forty-seven".