1198489 has 4 divisors (see below), whose sum is σ = 1221156. Its totient is φ = 1175824.

The previous prime is 1198481. The next prime is 1198511. The reversal of 1198489 is 9848911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 501264 = 835^2 + 708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198489 - 2³ = 1198481 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1198481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11254 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (305289).

2^1198489 is an apocalyptic number.

It is an amenable number.

1198489 is a deficient number, since it is larger than the sum of its proper divisors (22667).

1198489 is an equidigital number, since it uses as much as digits as its factorization.

1198489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22666.

The product of its digits is 20736, while the sum is 40.

The square root of 1198489 is about 1094.7552237829. The cubic root of 1198489 is about 106.2212360430.

The spelling of 1198489 in words is "one million, one hundred ninety-eight thousand, four hundred eighty-nine".