3918443 has 2 divisors, whose sum is σ = 3918444. Its totient is φ = 3918442.

The previous prime is 3918413. The next prime is 3918491. The reversal of 3918443 is 3448193.

It is a weak prime.

3918443 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 3918443 - 2⁶ = 3918379 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3918413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959221 + 1959222.

It is an arithmetic number, because the mean of its divisors is an integer number (1959222).

Almost surely, 2^3918443 is an apocalyptic number.

3918443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918443 is an equidigital number, since it uses as much as digits as its factorization.

3918443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 3918443 is about 1979.5057463923. The cubic root of 3918443 is about 157.6538246887.

The spelling of 3918443 in words is "three million, nine hundred eighteen thousand, four hundred forty-three".