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298989893 = 893359437

298989893 has 4 divisors (see below), whose sum is σ = 302349420. Its totient is φ = 295630368.

The previous prime is 298989841. The next prime is 298989937. The reversal of 298989893 is 398989892.

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 43533604 + 255456289 = 6598^2 + 15983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-298989893 is a prime.

It is a super-2 number, since 2×2989898932 = 178789912232302898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298989293) 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, 1679630 + ... + 1679807.

It is an arithmetic number, because the mean of its divisors is an integer number (75587355).

Almost surely, 2298989893 is an apocalyptic number.

It is an amenable number.

298989893 is a deficient number, since it is larger than the sum of its proper divisors (3359527).

298989893 is an equidigital number, since it uses as much as digits as its factorization.

298989893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359526.

The product of its digits is 20155392, while the sum is 65.

The square root of 298989893 is about 17291.3242118700. The cubic root of 298989893 is about 668.6807731293.

Subtracting 298989893 from its reverse (398989892), we obtain a palindrome (99999999).

The spelling of 298989893 in words is "two hundred ninety-eight million, nine hundred eighty-nine thousand, eight hundred ninety-three".

Divisors: 1 89 3359437 298989893