398826764872 has 16 divisors (see below), whose sum is σ = 771922771200. Its totient is φ = 192980692560.

The previous prime is 398826764863. The next prime is 398826764879. The reversal of 398826764872 is 278467628893.

It is not an unprimeable number, because it can be changed into a prime (398826764879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804085972 + ... + 804086467.

It is an arithmetic number, because the mean of its divisors is an integer number (48245173200).

Almost surely, 2^398826764872 is an apocalyptic number.

It is an amenable number.

398826764872 is a deficient number, since it is larger than the sum of its proper divisors (373096006328).

398826764872 is a wasteful number, since it uses less digits than its factorization.

398826764872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608172476 (or 1608172472 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 70.

The spelling of 398826764872 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, seven hundred sixty-four thousand, eight hundred seventy-two".