298809 has 40 divisors (see below), whose sum is σ = 557568. Its totient is φ = 155520.

The previous prime is 298801. The next prime is 298817. The reversal of 298809 is 908892.

It is an interprime number because it is at equal distance from previous prime (298801) and next prime (298817).

It is not a de Polignac number, because 298809 - 2³ = 298801 is a prime.

298809 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 298809.

It is not an unprimeable number, because it can be changed into a prime (298801) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9624 + ... + 9654.

2²⁹⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

298809 is a deficient number, since it is larger than the sum of its proper divisors (258759).

298809 is a wasteful number, since it uses less digits than its factorization.

298809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 298809 is about 546.6342470062. The cubic root of 298809 is about 66.8545892234.

The spelling of 298809 in words is "two hundred ninety-eight thousand, eight hundred nine".