404271671 has 2 divisors, whose sum is σ = 404271672. Its totient is φ = 404271670.

The previous prime is 404271641. The next prime is 404271697. The reversal of 404271671 is 176172404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404271671 - 2²⁶ = 337162807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404271641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202135835 + 202135836.

It is an arithmetic number, because the mean of its divisors is an integer number (202135836).

Almost surely, 2^404271671 is an apocalyptic number.

404271671 is a deficient number, since it is larger than the sum of its proper divisors (1).

404271671 is an equidigital number, since it uses as much as digits as its factorization.

404271671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 404271671 is about 20106.5081752153. The cubic root of 404271671 is about 739.4198465986.

The spelling of 404271671 in words is "four hundred four million, two hundred seventy-one thousand, six hundred seventy-one".