398991144894 has 8 divisors (see below), whose sum is σ = 797982289800. Its totient is φ = 132997048296.

The previous prime is 398991144887. The next prime is 398991144943. The reversal of 398991144894 is 498441199893.

It is a sphenic number, since it is the product of 3 distinct primes.

398991144894 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33249262069 + ... + 33249262080.

It is an arithmetic number, because the mean of its divisors is an integer number (99747786225).

Almost surely, 2^398991144894 is an apocalyptic number.

398991144894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398991144894 is a wasteful number, since it uses less digits than its factorization.

398991144894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66498524154.

The product of its digits is 80621568, while the sum is 69.

The spelling of 398991144894 in words is "three hundred ninety-eight billion, nine hundred ninety-one million, one hundred forty-four thousand, eight hundred ninety-four".