400043327 has 2 divisors, whose sum is σ = 400043328. Its totient is φ = 400043326.

The previous prime is 400043299. The next prime is 400043333. The reversal of 400043327 is 723340004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400043327 - 2¹⁶ = 399977791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400043227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200021663 + 200021664.

It is an arithmetic number, because the mean of its divisors is an integer number (200021664).

Almost surely, 2^400043327 is an apocalyptic number.

400043327 is a deficient number, since it is larger than the sum of its proper divisors (1).

400043327 is an equidigital number, since it uses as much as digits as its factorization.

400043327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 400043327 is about 20001.0831456699. The cubic root of 400043327 is about 736.8329017731.

The spelling of 400043327 in words is "four hundred million, forty-three thousand, three hundred twenty-seven".