3940806899 has 4 divisors (see below), whose sum is σ = 3962822760. Its totient is φ = 3918791040.

The previous prime is 3940806887. The next prime is 3940806911. The reversal of 3940806899 is 9986080493.

3940806899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9986080493 = 281 ⋅35537653.

It is an interprime number because it is at equal distance from previous prime (3940806887) and next prime (3940806911).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3940806899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940806829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11007662 + ... + 11008019.

It is an arithmetic number, because the mean of its divisors is an integer number (990705690).

Almost surely, 2^3940806899 is an apocalyptic number.

3940806899 is a deficient number, since it is larger than the sum of its proper divisors (22015861).

3940806899 is a wasteful number, since it uses less digits than its factorization.

3940806899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22015860.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 3940806899 is about 62775.8464618359. The cubic root of 3940806899 is about 1579.5318405466.

The spelling of 3940806899 in words is "three billion, nine hundred forty million, eight hundred six thousand, eight hundred ninety-nine".