404944543 has 2 divisors, whose sum is σ = 404944544. Its totient is φ = 404944542.

The previous prime is 404944541. The next prime is 404944591. The reversal of 404944543 is 345449404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404944543 - 2¹ = 404944541 is a prime.

Together with 404944541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404944541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202472271 + 202472272.

It is an arithmetic number, because the mean of its divisors is an integer number (202472272).

Almost surely, 2^404944543 is an apocalyptic number.

404944543 is a deficient number, since it is larger than the sum of its proper divisors (1).

404944543 is an equidigital number, since it uses as much as digits as its factorization.

404944543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 404944543 is about 20123.2339100851. The cubic root of 404944543 is about 739.8298507026.

The spelling of 404944543 in words is "four hundred four million, nine hundred forty-four thousand, five hundred forty-three".