990297 has 24 divisors (see below), whose sum is σ = 1784640. Its totient is φ = 514080.

The previous prime is 990293. The next prime is 990307. The reversal of 990297 is 792099.

It is not a de Polignac number, because 990297 - 2² = 990293 is a prime.

990297 is a modest number, since divided by 297 gives 99 as remainder.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (990293) 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 23 ways as a sum of consecutive naturals, for example, 22 + ... + 1407.

It is an arithmetic number, because the mean of its divisors is an integer number (74360).

2⁹⁹⁰²⁹⁷ is an apocalyptic number.

It is an amenable number.

990297 is a deficient number, since it is larger than the sum of its proper divisors (794343).

990297 is a wasteful number, since it uses less digits than its factorization.

990297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 990297 is about 995.1366740303. The cubic root of 990297 is about 99.6755148997.

It can be divided in two parts, 9902 and 97, that added together give a palindrome (9999).

The spelling of 990297 in words is "nine hundred ninety thousand, two hundred ninety-seven".