398132023938340 has 48 divisors (see below), whose sum is σ = 863292047546880. Its totient is φ = 154071950135040.

The previous prime is 398132023938331. The next prime is 398132023938343. The reversal of 398132023938340 is 43839320231893.

It is not an unprimeable number, because it can be changed into a prime (398132023938343) 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 15 ways as a sum of consecutive naturals, for example, 88793662 + ... + 93169621.

It is an arithmetic number, because the mean of its divisors is an integer number (17985250990560).

Almost surely, 2^{398132023938340} is an apocalyptic number.

It is an amenable number.

398132023938340 is an abundant number, since it is smaller than the sum of its proper divisors (465160023608540).

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

398132023938340 is a wasteful number, since it uses less digits than its factorization.

398132023938340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181966852 (or 181966850 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 58.

The spelling of 398132023938340 in words is "three hundred ninety-eight trillion, one hundred thirty-two billion, twenty-three million, nine hundred thirty-eight thousand, three hundred forty".