998297 has 4 divisors (see below), whose sum is σ = 1025316. Its totient is φ = 971280.

The previous prime is 998287. The next prime is 998311. The reversal of 998297 is 792899.

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 502681 + 495616 = 709^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 998297 - 2⁴ = 998281 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998297.

It is not an unprimeable number, because it can be changed into a prime (998237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13454 + ... + 13527.

It is an arithmetic number, because the mean of its divisors is an integer number (256329).

2⁹⁹⁸²⁹⁷ is an apocalyptic number.

It is an amenable number.

998297 is a deficient number, since it is larger than the sum of its proper divisors (27019).

998297 is a wasteful number, since it uses less digits than its factorization.

998297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27018.

The product of its digits is 81648, while the sum is 44.

The square root of 998297 is about 999.1481371649. The cubic root of 998297 is about 99.9432010783.

The spelling of 998297 in words is "nine hundred ninety-eight thousand, two hundred ninety-seven".