1998249 has 16 divisors (see below), whose sum is σ = 3060480. Its totient is φ = 1146960.

The previous prime is 1998233. The next prime is 1998251. The reversal of 1998249 is 9428991.

It is not a de Polignac number, because 1998249 - 2⁴ = 1998233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1998249.

It is not an unprimeable number, because it can be changed into a prime (1998209) 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, 967 + ... + 2220.

It is an arithmetic number, because the mean of its divisors is an integer number (191280).

2^1998249 is an apocalyptic number.

1998249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1998249 is a deficient number, since it is larger than the sum of its proper divisors (1062231).

1998249 is a wasteful number, since it uses less digits than its factorization.

1998249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220.

The product of its digits is 46656, while the sum is 42.

The square root of 1998249 is about 1413.5943548274. The cubic root of 1998249 is about 125.9553255580.

It can be divided in two parts, 199 and 8249, that added together give a palindrome (8448).

The spelling of 1998249 in words is "one million, nine hundred ninety-eight thousand, two hundred forty-nine".