4239971 has 2 divisors, whose sum is σ = 4239972. Its totient is φ = 4239970.

The previous prime is 4239931. The next prime is 4239979. The reversal of 4239971 is 1799324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4239971 - 2²² = 45667 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 (4239979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119985 + 2119986.

It is an arithmetic number, because the mean of its divisors is an integer number (2119986).

Almost surely, 2^4239971 is an apocalyptic number.

4239971 is a deficient number, since it is larger than the sum of its proper divisors (1).

4239971 is an equidigital number, since it uses as much as digits as its factorization.

4239971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 4239971 is about 2059.1189863629. The cubic root of 4239971 is about 161.8530776850.

The spelling of 4239971 in words is "four million, two hundred thirty-nine thousand, nine hundred seventy-one".