3939802393 has 2 divisors, whose sum is σ = 3939802394. Its totient is φ = 3939802392.

The previous prime is 3939802387. The next prime is 3939802441. The reversal of 3939802393 is 3932089393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2504301849 + 1435500544 = 50043^2 + 37888^2 .

It is a cyclic number.

It is not a de Polignac number, because 3939802393 - 2¹⁷ = 3939671321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3939802313) 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, 1969901196 + 1969901197.

It is an arithmetic number, because the mean of its divisors is an integer number (1969901197).

Almost surely, 2^3939802393 is an apocalyptic number.

It is an amenable number.

3939802393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939802393 is an equidigital number, since it uses as much as digits as its factorization.

3939802393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 49.

The square root of 3939802393 is about 62767.8452155242. The cubic root of 3939802393 is about 1579.3976223452.

The spelling of 3939802393 in words is "three billion, nine hundred thirty-nine million, eight hundred two thousand, three hundred ninety-three".