398004609 has 8 divisors (see below), whose sum is σ = 558603040. Its totient is φ = 251371296.

The previous prime is 398004547. The next prime is 398004611. The reversal of 398004609 is 906400893.

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

It is not a de Polignac number, because 398004609 - 2⁸ = 398004353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398024609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3491212 + ... + 3491325.

It is an arithmetic number, because the mean of its divisors is an integer number (69825380).

Almost surely, 2^398004609 is an apocalyptic number.

It is an amenable number.

398004609 is a deficient number, since it is larger than the sum of its proper divisors (160598431).

398004609 is a wasteful number, since it uses less digits than its factorization.

398004609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982559.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 398004609 is about 19950.0528570728. The cubic root of 398004609 is about 735.5790762520.

The spelling of 398004609 in words is "three hundred ninety-eight million, four thousand, six hundred nine".