3940923939 has 16 divisors (see below), whose sum is σ = 5347347840. Its totient is φ = 2580953600.

The previous prime is 3940923881. The next prime is 3940923979. The reversal of 3940923939 is 9393290493.

It is a cyclic number.

It is not a de Polignac number, because 3940923939 - 2⁸ = 3940923683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3940923891 and 3940923900.

It is not an unprimeable number, because it can be changed into a prime (3940923979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276424 + ... + 290330.

It is an arithmetic number, because the mean of its divisors is an integer number (334209240).

Almost surely, 2^3940923939 is an apocalyptic number.

3940923939 is a deficient number, since it is larger than the sum of its proper divisors (1406423901).

3940923939 is a wasteful number, since it uses less digits than its factorization.

3940923939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570.

The product of its (nonzero) digits is 1417176, while the sum is 51.

The square root of 3940923939 is about 62776.7786605844. The cubic root of 3940923939 is about 1579.5474774945.

The spelling of 3940923939 in words is "three billion, nine hundred forty million, nine hundred twenty-three thousand, nine hundred thirty-nine".