409898 has 8 divisors (see below), whose sum is σ = 617760. Its totient is φ = 203980.

The previous prime is 409897. The next prime is 409901. The reversal of 409898 is 898904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (409891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (77220).

2⁴⁰⁹⁸⁹⁸ is an apocalyptic number.

409898 is a deficient number, since it is larger than the sum of its proper divisors (207862).

409898 is a wasteful number, since it uses less digits than its factorization.

409898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 409898 is about 640.2327701703. The cubic root of 409898 is about 74.2834273035.

The spelling of 409898 in words is "four hundred nine thousand, eight hundred ninety-eight".