398883389812 has 12 divisors (see below), whose sum is σ = 698051507076. Its totient is φ = 199440102080.

The previous prime is 398883389789. The next prime is 398883389819. The reversal of 398883389812 is 218983388893.

It can be written as a sum of positive squares in 2 ways, for example, as 312966400356 + 85916989456 = 559434^2 + 293116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398883389819) 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, 302088 + ... + 942880.

It is an arithmetic number, because the mean of its divisors is an integer number (58170958923).

Almost surely, 2^398883389812 is an apocalyptic number.

It is an amenable number.

398883389812 is a deficient number, since it is larger than the sum of its proper divisors (299168117264).

398883389812 is a wasteful number, since it uses less digits than its factorization.

398883389812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796418 (or 796416 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 70.

The spelling of 398883389812 in words is "three hundred ninety-eight billion, eight hundred eighty-three million, three hundred eighty-nine thousand, eight hundred twelve".