398831374211 has 4 divisors (see below), whose sum is σ = 398836613472. Its totient is φ = 398826134952.

The previous prime is 398831374111. The next prime is 398831374219. The reversal of 398831374211 is 112473138893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112473138893 = 4091 ⋅27492823.

It is a cyclic number.

It is not a de Polignac number, because 398831374211 - 2³⁰ = 397757632387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398831374211.

It is not an unprimeable number, because it can be changed into a prime (398831374219) 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, 2503736 + ... + 2658261.

It is an arithmetic number, because the mean of its divisors is an integer number (99709153368).

Almost surely, 2^398831374211 is an apocalyptic number.

398831374211 is a deficient number, since it is larger than the sum of its proper divisors (5239261).

398831374211 is an equidigital number, since it uses as much as digits as its factorization.

398831374211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239260.

The product of its digits is 870912, while the sum is 50.

The spelling of 398831374211 in words is "three hundred ninety-eight billion, eight hundred thirty-one million, three hundred seventy-four thousand, two hundred eleven".