3945750917 has 4 divisors (see below), whose sum is σ = 3969378336. Its totient is φ = 3922123500.

The previous prime is 3945750889. The next prime is 3945750953. The reversal of 3945750917 is 7190575493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7190575493 = 17 ⋅422975029.

It is a cyclic number.

It is not a de Polignac number, because 3945750917 - 2²⁴ = 3928973701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945750317) 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 3 ways as a sum of consecutive naturals, for example, 11813459 + ... + 11813792.

It is an arithmetic number, because the mean of its divisors is an integer number (992344584).

Almost surely, 2^3945750917 is an apocalyptic number.

It is an amenable number.

3945750917 is a deficient number, since it is larger than the sum of its proper divisors (23627419).

3945750917 is a wasteful number, since it uses less digits than its factorization.

3945750917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23627418.

The product of its (nonzero) digits is 1190700, while the sum is 50.

The square root of 3945750917 is about 62815.2124648162. The cubic root of 3945750917 is about 1580.1921089114.

The spelling of 3945750917 in words is "three billion, nine hundred forty-five million, seven hundred fifty thousand, nine hundred seventeen".