404271641 has 2 divisors, whose sum is σ = 404271642. Its totient is φ = 404271640.

The previous prime is 404271619. The next prime is 404271671. The reversal of 404271641 is 146172404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210366016 + 193905625 = 14504^2 + 13925^2 .

It is a cyclic number.

It is not a de Polignac number, because 404271641 - 2¹⁰ = 404270617 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (404271671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202135820 + 202135821.

It is an arithmetic number, because the mean of its divisors is an integer number (202135821).

Almost surely, 2^404271641 is an apocalyptic number.

It is an amenable number.

404271641 is a deficient number, since it is larger than the sum of its proper divisors (1).

404271641 is an equidigital number, since it uses as much as digits as its factorization.

404271641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 404271641 is about 20106.5074291882. The cubic root of 404271641 is about 739.4198283084.

The spelling of 404271641 in words is "four hundred four million, two hundred seventy-one thousand, six hundred forty-one".