3972697 has 2 divisors, whose sum is σ = 3972698. Its totient is φ = 3972696.

The previous prime is 3972671. The next prime is 3972737. The reversal of 3972697 is 7962793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3904576 + 68121 = 1976^2 + 261^2 .

It is a cyclic number.

It is not a de Polignac number, because 3972697 - 2⁷ = 3972569 is a prime.

It is not a weakly prime, because it can be changed into another prime (3982697) 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, 1986348 + 1986349.

It is an arithmetic number, because the mean of its divisors is an integer number (1986349).

Almost surely, 2^3972697 is an apocalyptic number.

It is an amenable number.

3972697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972697 is an equidigital number, since it uses as much as digits as its factorization.

3972697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 3972697 is about 1993.1625623616. The cubic root of 3972697 is about 158.3781068822.

The spelling of 3972697 in words is "three million, nine hundred seventy-two thousand, six hundred ninety-seven".