3945052791 has 12 divisors (see below), whose sum is σ = 5702170968. Its totient is φ = 2628299184.

The previous prime is 3945052789. The next prime is 3945052807. The reversal of 3945052791 is 1972505493.

It is a happy number.

3945052791 is a `hidden beast` number, since 39 + 4 + 5 + 0 + 527 + 91 = 666.

It is not a de Polignac number, because 3945052791 - 2¹ = 3945052789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945052751) 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 in 11 ways as a sum of consecutive naturals, for example, 130200 + ... + 157613.

It is an arithmetic number, because the mean of its divisors is an integer number (475180914).

Almost surely, 2^3945052791 is an apocalyptic number.

3945052791 is a deficient number, since it is larger than the sum of its proper divisors (1757118177).

3945052791 is a wasteful number, since it uses less digits than its factorization.

3945052791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289342 (or 289339 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 3945052791 is about 62809.6552370732. The cubic root of 3945052791 is about 1580.0989083785.

The spelling of 3945052791 in words is "three billion, nine hundred forty-five million, fifty-two thousand, seven hundred ninety-one".