298542409 has 4 divisors (see below), whose sum is σ = 325682640. Its totient is φ = 271402180.

The previous prime is 298542367. The next prime is 298542437. The reversal of 298542409 is 904245892.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 298542409 - 2⁷ = 298542281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298542499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13570099 + ... + 13570120.

It is an arithmetic number, because the mean of its divisors is an integer number (81420660).

Almost surely, 2^298542409 is an apocalyptic number.

It is an amenable number.

298542409 is a deficient number, since it is larger than the sum of its proper divisors (27140231).

298542409 is a wasteful number, since it uses less digits than its factorization.

298542409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27140230.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 298542409 is about 17278.3798140914. The cubic root of 298542409 is about 668.3470122939.

The spelling of 298542409 in words is "two hundred ninety-eight million, five hundred forty-two thousand, four hundred nine".