3972071 has 2 divisors, whose sum is σ = 3972072. Its totient is φ = 3972070.

The previous prime is 3972037. The next prime is 3972091. The reversal of 3972071 is 1702793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3972071 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3972011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986035 + 1986036.

It is an arithmetic number, because the mean of its divisors is an integer number (1986036).

Almost surely, 2^3972071 is an apocalyptic number.

3972071 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972071 is an equidigital number, since it uses as much as digits as its factorization.

3972071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 3972071 is about 1993.0055193100. The cubic root of 3972071 is about 158.3697876050.

The spelling of 3972071 in words is "three million, nine hundred seventy-two thousand, seventy-one".