3943640307 has 8 divisors (see below), whose sum is σ = 5296016320. Its totient is φ = 2610178920.

The previous prime is 3943640287. The next prime is 3943640317. The reversal of 3943640307 is 7030463493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3943640307 - 2¹⁰ = 3943639283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3943640317) 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 7 ways as a sum of consecutive naturals, for example, 4728169 + ... + 4729002.

It is an arithmetic number, because the mean of its divisors is an integer number (662002040).

Almost surely, 2^3943640307 is an apocalyptic number.

3943640307 is a deficient number, since it is larger than the sum of its proper divisors (1352376013).

3943640307 is a wasteful number, since it uses less digits than its factorization.

3943640307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9457313.

The product of its (nonzero) digits is 163296, while the sum is 39.

The square root of 3943640307 is about 62798.4100674531. The cubic root of 3943640307 is about 1579.9103066907.

The spelling of 3943640307 in words is "three billion, nine hundred forty-three million, six hundred forty thousand, three hundred seven".