404403999971 has 2 divisors, whose sum is σ = 404403999972. Its totient is φ = 404403999970.

The previous prime is 404403999947. The next prime is 404403999991. The reversal of 404403999971 is 179999304404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404403999971 - 2⁶ = 404403999907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404403999971.

It is not a weakly prime, because it can be changed into another prime (404403999941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202201999985 + 202201999986.

It is an arithmetic number, because the mean of its divisors is an integer number (202201999986).

Almost surely, 2^404403999971 is an apocalyptic number.

404403999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

404403999971 is an equidigital number, since it uses as much as digits as its factorization.

404403999971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 404403999971 in words is "four hundred four billion, four hundred three million, nine hundred ninety-nine thousand, nine hundred seventy-one".