404400440399 has 2 divisors, whose sum is σ = 404400440400. Its totient is φ = 404400440398.

The previous prime is 404400440387. The next prime is 404400440413. The reversal of 404400440399 is 993044004404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404400440399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404400442399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202200220199 + 202200220200.

It is an arithmetic number, because the mean of its divisors is an integer number (202200220200).

Almost surely, 2^404400440399 is an apocalyptic number.

404400440399 is a deficient number, since it is larger than the sum of its proper divisors (1).

404400440399 is an equidigital number, since it uses as much as digits as its factorization.

404400440399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 404400440399 in words is "four hundred four billion, four hundred million, four hundred forty thousand, three hundred ninety-nine".