3943427 has 2 divisors, whose sum is σ = 3943428. Its totient is φ = 3943426.

The previous prime is 3943409. The next prime is 3943451. The reversal of 3943427 is 7243493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3943427 - 2⁸ = 3943171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3943393 and 3943402.

It is not a weakly prime, because it can be changed into another prime (3943627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971713 + 1971714.

It is an arithmetic number, because the mean of its divisors is an integer number (1971714).

Almost surely, 2^3943427 is an apocalyptic number.

3943427 is a deficient number, since it is larger than the sum of its proper divisors (1).

3943427 is an equidigital number, since it uses as much as digits as its factorization.

3943427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 3943427 is about 1985.8063853256. The cubic root of 3943427 is about 157.9881820996.

The spelling of 3943427 in words is "three million, nine hundred forty-three thousand, four hundred twenty-seven".