398851973774 has 16 divisors (see below), whose sum is σ = 630275456400. Its totient is φ = 188777127744.

The previous prime is 398851973713. The next prime is 398851973881. The reversal of 398851973774 is 477379158893.

It is a junction number, because it is equal to n+sod(n) for n = 398851973698 and 398851973707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4195559 + ... + 4289570.

It is an arithmetic number, because the mean of its divisors is an integer number (39392216025).

Almost surely, 2^398851973774 is an apocalyptic number.

398851973774 is a deficient number, since it is larger than the sum of its proper divisors (231423482626).

398851973774 is a wasteful number, since it uses less digits than its factorization.

398851973774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486387.

The product of its digits is 320060160, while the sum is 71.

The spelling of 398851973774 in words is "three hundred ninety-eight billion, eight hundred fifty-one million, nine hundred seventy-three thousand, seven hundred seventy-four".