1298487 has 8 divisors (see below), whose sum is σ = 1739520. Its totient is φ = 861560.

The previous prime is 1298467. The next prime is 1298489. The reversal of 1298487 is 7848921.

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 1298487 - 2¹⁹ = 774199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 1622.

It is an arithmetic number, because the mean of its divisors is an integer number (217440).

2^1298487 is an apocalyptic number.

1298487 is a deficient number, since it is larger than the sum of its proper divisors (441033).

1298487 is a wasteful number, since it uses less digits than its factorization.

1298487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its digits is 32256, while the sum is 39.

The square root of 1298487 is about 1139.5117375438. The cubic root of 1298487 is about 109.0969314226.

The spelling of 1298487 in words is "one million, two hundred ninety-eight thousand, four hundred eighty-seven".