298409 has 2 divisors, whose sum is σ = 298410. Its totient is φ = 298408.

The previous prime is 298399. The next prime is 298411. The reversal of 298409 is 904892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222784 + 75625 = 472^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 298409 - 2⁸ = 298153 is a prime.

Together with 298411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (298709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149204 + 149205.

It is an arithmetic number, because the mean of its divisors is an integer number (149205).

2²⁹⁸⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

298409 is a deficient number, since it is larger than the sum of its proper divisors (1).

298409 is an equidigital number, since it uses as much as digits as its factorization.

298409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 298409 is about 546.2682491231. The cubic root of 298409 is about 66.8247443200.

It can be divided in two parts, 298 and 409, that added together give a palindrome (707).

The spelling of 298409 in words is "two hundred ninety-eight thousand, four hundred nine".