398797650768 has 40 divisors (see below), whose sum is σ = 1123884290016. Its totient is φ = 120847772800.

The previous prime is 398797650767. The next prime is 398797650787. The reversal of 398797650768 is 867056797893.

It is a self number, because there is not a number n which added to its sum of digits gives 398797650768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398797650767) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 377648763 + ... + 377649818.

Almost surely, 2^398797650768 is an apocalyptic number.

It is an amenable number.

398797650768 is an abundant number, since it is smaller than the sum of its proper divisors (725086639248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398797650768 is a wasteful number, since it uses less digits than its factorization.

398797650768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755298603 (or 755298597 counting only the distinct ones).

The product of its (nonzero) digits is 960180480, while the sum is 75.

The spelling of 398797650768 in words is "three hundred ninety-eight billion, seven hundred ninety-seven million, six hundred fifty thousand, seven hundred sixty-eight".