1298897 has 8 divisors (see below), whose sum is σ = 1380000. Its totient is φ = 1219104.

The previous prime is 1298887. The next prime is 1298909. The reversal of 1298897 is 7988921.

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 1298897 - 2⁸ = 1298641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298887) 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, 2354 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (172500).

2^1298897 is an apocalyptic number.

It is an amenable number.

1298897 is a deficient number, since it is larger than the sum of its proper divisors (81103).

1298897 is a wasteful number, since it uses less digits than its factorization.

1298897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its digits is 72576, while the sum is 44.

The square root of 1298897 is about 1139.6916249583. The cubic root of 1298897 is about 109.1084127427.

The spelling of 1298897 in words is "one million, two hundred ninety-eight thousand, eight hundred ninety-seven".