404301643 has 2 divisors, whose sum is σ = 404301644. Its totient is φ = 404301642.

The previous prime is 404301641. The next prime is 404301647. The reversal of 404301643 is 346103404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404301643 - 2¹ = 404301641 is a prime.

Together with 404301641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404301641) 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, 202150821 + 202150822.

It is an arithmetic number, because the mean of its divisors is an integer number (202150822).

Almost surely, 2^404301643 is an apocalyptic number.

404301643 is a deficient number, since it is larger than the sum of its proper divisors (1).

404301643 is an equidigital number, since it uses as much as digits as its factorization.

404301643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 404301643 is about 20107.2534922102. The cubic root of 404301643 is about 739.4381192484.

The spelling of 404301643 in words is "four hundred four million, three hundred one thousand, six hundred forty-three".