398324838 has 8 divisors (see below), whose sum is σ = 796649688. Its totient is φ = 132774944.

The previous prime is 398324827. The next prime is 398324891. The reversal of 398324838 is 838423893.

It is a happy number.

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

398324838 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33193731 + ... + 33193742.

It is an arithmetic number, because the mean of its divisors is an integer number (99581211).

Almost surely, 2^398324838 is an apocalyptic number.

398324838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398324838 is a wasteful number, since it uses less digits than its factorization.

398324838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66387478.

The product of its digits is 995328, while the sum is 48.

The square root of 398324838 is about 19958.0770115760. The cubic root of 398324838 is about 735.7763022811.

The spelling of 398324838 in words is "three hundred ninety-eight million, three hundred twenty-four thousand, eight hundred thirty-eight".