398318979423 has 8 divisors (see below), whose sum is σ = 531447699888. Its totient is φ = 265368122624.

The previous prime is 398318979403. The next prime is 398318979427. The reversal of 398318979423 is 324979813893.

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

It is a cyclic number.

It is not a de Polignac number, because 398318979423 - 2⁸ = 398318979167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398318979427) 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 7 ways as a sum of consecutive naturals, for example, 44460690 + ... + 44469647.

It is an arithmetic number, because the mean of its divisors is an integer number (66430962486).

Almost surely, 2^398318979423 is an apocalyptic number.

398318979423 is a deficient number, since it is larger than the sum of its proper divisors (133128720465).

398318979423 is a wasteful number, since it uses less digits than its factorization.

398318979423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88931833.

The product of its digits is 70543872, while the sum is 66.

The spelling of 398318979423 in words is "three hundred ninety-eight billion, three hundred eighteen million, nine hundred seventy-nine thousand, four hundred twenty-three".