400304004013 has 4 divisors (see below), whose sum is σ = 410067516348. Its totient is φ = 390540491680.

The previous prime is 400304004011. The next prime is 400304004017. The reversal of 400304004013 is 310400403004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123962438889 + 276341565124 = 352083^2 + 525682^2 .

It is a cyclic number.

It is not a de Polignac number, because 400304004013 - 2¹ = 400304004011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400304004011) 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, 4881756106 + ... + 4881756187.

It is an arithmetic number, because the mean of its divisors is an integer number (102516879087).

Almost surely, 2^400304004013 is an apocalyptic number.

It is an amenable number.

400304004013 is a deficient number, since it is larger than the sum of its proper divisors (9763512335).

400304004013 is an equidigital number, since it uses as much as digits as its factorization.

400304004013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9763512334.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 400304004013 its reverse (310400403004), we get a palindrome (710704407017).

The spelling of 400304004013 in words is "four hundred billion, three hundred four million, four thousand, thirteen".