3939382397 has 2 divisors, whose sum is σ = 3939382398. Its totient is φ = 3939382396.

The previous prime is 3939382331. The next prime is 3939382399. The reversal of 3939382397 is 7932839393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3734920996 + 204461401 = 61114^2 + 14299^2 .

It is a cyclic number.

It is not a de Polignac number, because 3939382397 - 2¹⁸ = 3939120253 is a prime.

Together with 3939382399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3939382399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969691198 + 1969691199.

It is an arithmetic number, because the mean of its divisors is an integer number (1969691199).

Almost surely, 2^3939382397 is an apocalyptic number.

It is an amenable number.

3939382397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939382397 is an equidigital number, since it uses as much as digits as its factorization.

3939382397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 56.

The square root of 3939382397 is about 62764.4994961324. The cubic root of 3939382397 is about 1579.3414973428.

The spelling of 3939382397 in words is "three billion, nine hundred thirty-nine million, three hundred eighty-two thousand, three hundred ninety-seven".