398347319993 has 4 divisors (see below), whose sum is σ = 455254080000. Its totient is φ = 341440559988.

The previous prime is 398347319987. The next prime is 398347320029. The reversal of 398347319993 is 399913743893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398347319993 - 2¹² = 398347315897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398347319963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28453379993 + ... + 28453380006.

It is an arithmetic number, because the mean of its divisors is an integer number (113813520000).

Almost surely, 2^398347319993 is an apocalyptic number.

It is an amenable number.

398347319993 is a deficient number, since it is larger than the sum of its proper divisors (56906760007).

398347319993 is an equidigital number, since it uses as much as digits as its factorization.

398347319993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56906760006.

The product of its digits is 119042784, while the sum is 68.

The spelling of 398347319993 in words is "three hundred ninety-eight billion, three hundred forty-seven million, three hundred nineteen thousand, nine hundred ninety-three".