400004040341 has 4 divisors (see below), whose sum is σ = 400497264384. Its totient is φ = 399510816300.

The previous prime is 400004040311. The next prime is 400004040353. The reversal of 400004040341 is 143040400004.

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 a de Polignac number, because none of the positive numbers 2^k-400004040341 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 (400004040311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246610805 + ... + 246612426.

It is an arithmetic number, because the mean of its divisors is an integer number (100124316096).

Almost surely, 2^400004040341 is an apocalyptic number.

It is an amenable number.

400004040341 is a deficient number, since it is larger than the sum of its proper divisors (493224043).

400004040341 is an equidigital number, since it uses as much as digits as its factorization.

400004040341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493224042.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 400004040341 its reverse (143040400004), we get a palindrome (543044440345).

The spelling of 400004040341 in words is "four hundred billion, four million, forty thousand, three hundred forty-one".