3942397973 has 2 divisors, whose sum is σ = 3942397974. Its totient is φ = 3942397972.

The previous prime is 3942397931. The next prime is 3942397997. The reversal of 3942397973 is 3797932493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2968833169 + 973564804 = 54487^2 + 31202^2 .

It is a cyclic number.

It is not a de Polignac number, because 3942397973 - 2⁸ = 3942397717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3942397573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1971198986 + 1971198987.

It is an arithmetic number, because the mean of its divisors is an integer number (1971198987).

Almost surely, 2^3942397973 is an apocalyptic number.

It is an amenable number.

3942397973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3942397973 is an equidigital number, since it uses as much as digits as its factorization.

3942397973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 56.

The square root of 3942397973 is about 62788.5178436313. The cubic root of 3942397973 is about 1579.7443870259.

The spelling of 3942397973 in words is "three billion, nine hundred forty-two million, three hundred ninety-seven thousand, nine hundred seventy-three".