340455443 has 2 divisors, whose sum is σ = 340455444. Its totient is φ = 340455442.

The previous prime is 340455391. The next prime is 340455449. The reversal of 340455443 is 344554043.

It is a strong prime.

It is an emirp because it is prime and its reverse (344554043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340455443 - 2⁸ = 340455187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (340455449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170227721 + 170227722.

It is an arithmetic number, because the mean of its divisors is an integer number (170227722).

Almost surely, 2^340455443 is an apocalyptic number.

340455443 is a deficient number, since it is larger than the sum of its proper divisors (1).

340455443 is an equidigital number, since it uses as much as digits as its factorization.

340455443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 32.

The square root of 340455443 is about 18451.4347138644. The cubic root of 340455443 is about 698.2647106423.

The spelling of 340455443 in words is "three hundred forty million, four hundred fifty-five thousand, four hundred forty-three".