404380447 has 2 divisors, whose sum is σ = 404380448. Its totient is φ = 404380446.

The previous prime is 404380423. The next prime is 404380463. The reversal of 404380447 is 744083404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404380447 - 2¹¹ = 404378399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404380247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202190223 + 202190224.

It is an arithmetic number, because the mean of its divisors is an integer number (202190224).

Almost surely, 2^404380447 is an apocalyptic number.

404380447 is a deficient number, since it is larger than the sum of its proper divisors (1).

404380447 is an equidigital number, since it uses as much as digits as its factorization.

404380447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 34.

The square root of 404380447 is about 20109.2129880809. The cubic root of 404380447 is about 739.4861583771.

The spelling of 404380447 in words is "four hundred four million, three hundred eighty thousand, four hundred forty-seven".