298989891 has 12 divisors (see below), whose sum is σ = 432241680. Its totient is φ = 199157040.

The previous prime is 298989841. The next prime is 298989937. The reversal of 298989891 is 198989892.

It is not a de Polignac number, because 298989891 - 2⁶ = 298989827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (298989841) 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 11 ways as a sum of consecutive naturals, for example, 2455 + ... + 24576.

It is an arithmetic number, because the mean of its divisors is an integer number (36020140).

Almost surely, 2^298989891 is an apocalyptic number.

298989891 is a deficient number, since it is larger than the sum of its proper divisors (133251789).

298989891 is a wasteful number, since it uses less digits than its factorization.

298989891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28266 (or 28263 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 63.

The square root of 298989891 is about 17291.3241540375. The cubic root of 298989891 is about 668.6807716383.

Subtracting from 298989891 its reverse (198989892), we obtain a palindrome (99999999).

The spelling of 298989891 in words is "two hundred ninety-eight million, nine hundred eighty-nine thousand, eight hundred ninety-one".