404895641 has 2 divisors, whose sum is σ = 404895642. Its totient is φ = 404895640.

The previous prime is 404895629. The next prime is 404895653. The reversal of 404895641 is 146598404.

It is a balanced prime because it is at equal distance from previous prime (404895629) and next prime (404895653).

It can be written as a sum of positive squares in only one way, i.e., 306390016 + 98505625 = 17504^2 + 9925^2 .

It is a cyclic number.

It is not a de Polignac number, because 404895641 - 2²² = 400701337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404895661) 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, 202447820 + 202447821.

It is an arithmetic number, because the mean of its divisors is an integer number (202447821).

Almost surely, 2^404895641 is an apocalyptic number.

It is an amenable number.

404895641 is a deficient number, since it is larger than the sum of its proper divisors (1).

404895641 is an equidigital number, since it uses as much as digits as its factorization.

404895641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 404895641 is about 20122.0188102486. The cubic root of 404895641 is about 739.8000683398.

The spelling of 404895641 in words is "four hundred four million, eight hundred ninety-five thousand, six hundred forty-one".