3972937 has 2 divisors, whose sum is σ = 3972938. Its totient is φ = 3972936.

The previous prime is 3972931. The next prime is 3972953. The reversal of 3972937 is 7392793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3059001 + 913936 = 1749^2 + 956^2 .

It is an emirp because it is prime and its reverse (7392793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3972937 - 2⁷ = 3972809 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 3972937.

It is not a weakly prime, because it can be changed into another prime (3972931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986468 + 1986469.

It is an arithmetic number, because the mean of its divisors is an integer number (1986469).

Almost surely, 2^3972937 is an apocalyptic number.

It is an amenable number.

3972937 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972937 is an equidigital number, since it uses as much as digits as its factorization.

3972937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 40.

The square root of 3972937 is about 1993.2227672792. Note that the first 3 decimals coincide. The cubic root of 3972937 is about 158.3812961497.

The spelling of 3972937 in words is "three million, nine hundred seventy-two thousand, nine hundred thirty-seven".