398830781488 has 20 divisors (see below), whose sum is σ = 772771934520. Its totient is φ = 199405766144.

The previous prime is 398830781471. The next prime is 398830781491. The reversal of 398830781488 is 884187038893.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253570 + ... + 928417.

It is an arithmetic number, because the mean of its divisors is an integer number (38638596726).

Almost surely, 2^398830781488 is an apocalyptic number.

It is an amenable number.

398830781488 is a deficient number, since it is larger than the sum of its proper divisors (373941153032).

398830781488 is a wasteful number, since it uses less digits than its factorization.

398830781488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203084 (or 1203078 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 67.

The spelling of 398830781488 in words is "three hundred ninety-eight billion, eight hundred thirty million, seven hundred eighty-one thousand, four hundred eighty-eight".