198438441 has 8 divisors (see below), whose sum is σ = 267934080. Its totient is φ = 130617552.

The previous prime is 198438419. The next prime is 198438463. The reversal of 198438441 is 144834891.

It is an interprime number because it is at equal distance from previous prime (198438419) and next prime (198438463).

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

It is not a de Polignac number, because 198438441 - 2¹⁴ = 198422057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198438393 and 198438402.

It is not an unprimeable number, because it can be changed into a prime (198438941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418410 + ... + 418883.

It is an arithmetic number, because the mean of its divisors is an integer number (33491760).

Almost surely, 2^198438441 is an apocalyptic number.

It is an amenable number.

198438441 is a deficient number, since it is larger than the sum of its proper divisors (69495639).

198438441 is an equidigital number, since it uses as much as digits as its factorization.

198438441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837375.

The product of its digits is 110592, while the sum is 42.

The square root of 198438441 is about 14086.8179870402. The cubic root of 198438441 is about 583.2775604545.

The spelling of 198438441 in words is "one hundred ninety-eight million, four hundred thirty-eight thousand, four hundred forty-one".