398796162913 has 4 divisors (see below), whose sum is σ = 398797546500. Its totient is φ = 398794779328.

The previous prime is 398796162847. The next prime is 398796162929. The reversal of 398796162913 is 319261697893.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 244384888609 + 154411274304 = 494353^2 + 392952^2 .

It is a cyclic number.

It is not a de Polignac number, because 398796162913 - 2¹⁷ = 398796031841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398796168913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77788 + ... + 896461.

It is an arithmetic number, because the mean of its divisors is an integer number (99699386625).

Almost surely, 2^398796162913 is an apocalyptic number.

It is an amenable number.

398796162913 is a deficient number, since it is larger than the sum of its proper divisors (1383587).

398796162913 is an equidigital number, since it uses as much as digits as its factorization.

398796162913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383586.

The product of its digits is 26453952, while the sum is 64.

The spelling of 398796162913 in words is "three hundred ninety-eight billion, seven hundred ninety-six million, one hundred sixty-two thousand, nine hundred thirteen".