398436039825 has 24 divisors (see below), whose sum is σ = 667086172800. Its totient is φ = 209809354560.

The previous prime is 398436039811. The next prime is 398436039889. The reversal of 398436039825 is 528930634893.

It is not a de Polignac number, because 398436039825 - 2⁴ = 398436039809 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 33617370 + ... + 33629219.

It is an arithmetic number, because the mean of its divisors is an integer number (27795257200).

Almost surely, 2^398436039825 is an apocalyptic number.

It is an amenable number.

398436039825 is a deficient number, since it is larger than the sum of its proper divisors (268650132975).

398436039825 is a wasteful number, since it uses less digits than its factorization.

398436039825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67246681 (or 67246676 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 398436039825 in words is "three hundred ninety-eight billion, four hundred thirty-six million, thirty-nine thousand, eight hundred twenty-five".