3970666539 has 18 divisors (see below), whose sum is σ = 6671800980. Its totient is φ = 2268952056.

The previous prime is 3970666529. The next prime is 3970666577. The reversal of 3970666539 is 9356660793.

It is a happy number.

3970666539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3970666539 - 2⁷ = 3970666411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3970666529) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4501449 + ... + 4502330.

It is an arithmetic number, because the mean of its divisors is an integer number (370655610).

Almost surely, 2^3970666539 is an apocalyptic number.

3970666539 is a deficient number, since it is larger than the sum of its proper divisors (2701134441).

3970666539 is a wasteful number, since it uses less digits than its factorization.

3970666539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9003799 (or 9003789 counting only the distinct ones).

The product of its (nonzero) digits is 5511240, while the sum is 54.

The square root of 3970666539 is about 63013.2251118763. The cubic root of 3970666539 is about 1583.5111972697.

The spelling of 3970666539 in words is "three billion, nine hundred seventy million, six hundred sixty-six thousand, five hundred thirty-nine".