398334433892 has 12 divisors (see below), whose sum is σ = 697135503036. Its totient is φ = 199152861600.

The previous prime is 398334433853. The next prime is 398334433921. The reversal of 398334433892 is 298334433893.

It can be written as a sum of positive squares in 2 ways, for example, as 231759439396 + 166574994496 = 481414^2 + 408136^2 .

It is a super-3 number, since 3×398334433892³ (a number of 36 digits) contains 333 as substring.

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, 3526283 + ... + 3637490.

It is an arithmetic number, because the mean of its divisors is an integer number (58094625253).

Almost surely, 2^398334433892 is an apocalyptic number.

It is an amenable number.

398334433892 is a deficient number, since it is larger than the sum of its proper divisors (298801069144).

398334433892 is a wasteful number, since it uses less digits than its factorization.

398334433892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177678 (or 7177676 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 59.

Subtracting from 398334433892 its reverse (298334433893), we obtain a palindrome (99999999999).

The spelling of 398334433892 in words is "three hundred ninety-eight billion, three hundred thirty-four million, four hundred thirty-three thousand, eight hundred ninety-two".