198487489 has 8 divisors (see below), whose sum is σ = 201386432. Its totient is φ = 195607440.

The previous prime is 198487483. The next prime is 198487501. The reversal of 198487489 is 984784891.

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 198487489 - 2³ = 198487481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198487481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17167 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (25173304).

Almost surely, 2^198487489 is an apocalyptic number.

It is an amenable number.

198487489 is a deficient number, since it is larger than the sum of its proper divisors (2898943).

198487489 is a wasteful number, since it uses less digits than its factorization.

198487489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447.

The product of its digits is 4644864, while the sum is 58.

The square root of 198487489 is about 14088.5587978331. The cubic root of 198487489 is about 583.3256127051.

The spelling of 198487489 in words is "one hundred ninety-eight million, four hundred eighty-seven thousand, four hundred eighty-nine".