404013403144423 has 2 divisors, whose sum is σ = 404013403144424. Its totient is φ = 404013403144422.

The previous prime is 404013403144381. The next prime is 404013403144433. The reversal of 404013403144423 is 324441304310404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404013403144423 - 2²¹ = 404013401047271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404013403144433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202006701572211 + 202006701572212.

It is an arithmetic number, because the mean of its divisors is an integer number (202006701572212).

Almost surely, 2^{404013403144423} is an apocalyptic number.

404013403144423 is a deficient number, since it is larger than the sum of its proper divisors (1).

404013403144423 is an equidigital number, since it uses as much as digits as its factorization.

404013403144423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 404013403144423 its reverse (324441304310404), we get a palindrome (728454707454827).

The spelling of 404013403144423 in words is "four hundred four trillion, thirteen billion, four hundred three million, one hundred forty-four thousand, four hundred twenty-three".