298058991 has 4 divisors (see below), whose sum is σ = 397411992. Its totient is φ = 198705992.

The previous prime is 298058987. The next prime is 298059019. The reversal of 298058991 is 199850892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 298058991 - 2² = 298058987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298058911) 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, 49676496 + ... + 49676501.

It is an arithmetic number, because the mean of its divisors is an integer number (99352998).

Almost surely, 2^298058991 is an apocalyptic number.

298058991 is a deficient number, since it is larger than the sum of its proper divisors (99353001).

298058991 is an equidigital number, since it uses as much as digits as its factorization.

298058991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99353000.

The product of its (nonzero) digits is 466560, while the sum is 51.

The square root of 298058991 is about 17264.3850455207. The cubic root of 298058991 is about 667.9860747154.

The spelling of 298058991 in words is "two hundred ninety-eight million, fifty-eight thousand, nine hundred ninety-one".