3942947 has 2 divisors, whose sum is σ = 3942948. Its totient is φ = 3942946.

The previous prime is 3942941. The next prime is 3942977. The reversal of 3942947 is 7492493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3942947 - 2⁴ = 3942931 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3942947.

It is not a weakly prime, because it can be changed into another prime (3942941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971473 + 1971474.

It is an arithmetic number, because the mean of its divisors is an integer number (1971474).

Almost surely, 2^3942947 is an apocalyptic number.

3942947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942947 is an equidigital number, since it uses as much as digits as its factorization.

3942947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 3942947 is about 1985.6855239438. The cubic root of 3942947 is about 157.9817716513.

The spelling of 3942947 in words is "three million, nine hundred forty-two thousand, nine hundred forty-seven".