1298984 has 16 divisors (see below), whose sum is σ = 2447700. Its totient is φ = 646272.

The previous prime is 1298981. The next prime is 1298989. The reversal of 1298984 is 4898921.

It can be written as a sum of positive squares in 2 ways, for example, as 1162084 + 136900 = 1078^2 + 370^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298981) 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, 2972 + ... + 3380.

2^1298984 is an apocalyptic number.

It is an amenable number.

1298984 is a deficient number, since it is larger than the sum of its proper divisors (1148716).

1298984 is a wasteful number, since it uses less digits than its factorization.

1298984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 808 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 1298984 is about 1139.7297925386. The cubic root of 1298984 is about 109.1108487121.

The spelling of 1298984 in words is "one million, two hundred ninety-eight thousand, nine hundred eighty-four".