298598409 has 6 divisors (see below), whose sum is σ = 431308826. Its totient is φ = 199065600.

The previous prime is 298598383. The next prime is 298598411. The reversal of 298598409 is 904895892.

298598409 is a `hidden beast` number, since 2 + 9 + 8 + 598 + 40 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 298598400 + 9 = 17280^2 + 3^2 .

It is a de Polignac number, because none of the positive numbers 2^k-298598409 is a prime.

It is a super-2 number, since 2×298598409² = 178322019714662562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298598009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16588792 + ... + 16588809.

Almost surely, 2^298598409 is an apocalyptic number.

It is an amenable number.

298598409 is a deficient number, since it is larger than the sum of its proper divisors (132710417).

298598409 is a wasteful number, since it uses less digits than its factorization.

298598409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33177607 (or 33177604 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 298598409 is about 17280.0002604167. Note that the first 3 decimals coincide. The cubic root of 298598409 is about 668.3887987555.

The spelling of 298598409 in words is "two hundred ninety-eight million, five hundred ninety-eight thousand, four hundred nine".