298487591 has 2 divisors, whose sum is σ = 298487592. Its totient is φ = 298487590.

The previous prime is 298487569. The next prime is 298487593. The reversal of 298487591 is 195784892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 298487591 - 2¹⁰ = 298486567 is a prime.

Together with 298487593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298487593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149243795 + 149243796.

It is an arithmetic number, because the mean of its divisors is an integer number (149243796).

Almost surely, 2^298487591 is an apocalyptic number.

298487591 is a deficient number, since it is larger than the sum of its proper divisors (1).

298487591 is an equidigital number, since it uses as much as digits as its factorization.

298487591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 53.

The square root of 298487591 is about 17276.7934235494. The cubic root of 298487591 is about 668.3061027636.

The spelling of 298487591 in words is "two hundred ninety-eight million, four hundred eighty-seven thousand, five hundred ninety-one".