3934889993 has 2 divisors, whose sum is σ = 3934889994. Its totient is φ = 3934889992.

The previous prime is 3934889977. The next prime is 3934890041. The reversal of 3934889993 is 3999884393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3852933184 + 81956809 = 62072^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 3934889993 - 2⁴ = 3934889977 is a prime.

It is not a weakly prime, because it can be changed into another prime (3934889963) 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, 1967444996 + 1967444997.

It is an arithmetic number, because the mean of its divisors is an integer number (1967444997).

Almost surely, 2^3934889993 is an apocalyptic number.

It is an amenable number.

3934889993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3934889993 is an equidigital number, since it uses as much as digits as its factorization.

3934889993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45349632, while the sum is 65.

The square root of 3934889993 is about 62728.7015089584. The cubic root of 3934889993 is about 1578.7409176854.

The spelling of 3934889993 in words is "three billion, nine hundred thirty-four million, eight hundred eighty-nine thousand, nine hundred ninety-three".