3940989071 has 2 divisors, whose sum is σ = 3940989072. Its totient is φ = 3940989070.

The previous prime is 3940989047. The next prime is 3940989077. The reversal of 3940989071 is 1709890493.

It is a strong prime.

It is an emirp because it is prime and its reverse (1709890493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3940989071 - 2⁶ = 3940989007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940989077) 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, 1970494535 + 1970494536.

It is an arithmetic number, because the mean of its divisors is an integer number (1970494536).

Almost surely, 2^3940989071 is an apocalyptic number.

3940989071 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940989071 is an equidigital number, since it uses as much as digits as its factorization.

3940989071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 3940989071 is about 62777.2974171396. The cubic root of 3940989071 is about 1579.5561792203.

The spelling of 3940989071 in words is "three billion, nine hundred forty million, nine hundred eighty-nine thousand, seventy-one".