3940852391 has 24 divisors (see below), whose sum is σ = 4703577984. Its totient is φ = 3290219520.

The previous prime is 3940852327. The next prime is 3940852393. The reversal of 3940852391 is 1932580493.

It is not a de Polignac number, because 3940852391 - 2⁶ = 3940852327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940852393) 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 in 23 ways as a sum of consecutive naturals, for example, 1732631 + ... + 1734903.

It is an arithmetic number, because the mean of its divisors is an integer number (195982416).

Almost surely, 2^3940852391 is an apocalyptic number.

3940852391 is a deficient number, since it is larger than the sum of its proper divisors (762725593).

3940852391 is a wasteful number, since it uses less digits than its factorization.

3940852391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 3940852391 is about 62776.2087976010. The cubic root of 3940852391 is about 1579.5379184715.

The spelling of 3940852391 in words is "three billion, nine hundred forty million, eight hundred fifty-two thousand, three hundred ninety-one".