3944631811 has 8 divisors (see below), whose sum is σ = 4002393600. Its totient is φ = 3887287488.

The previous prime is 3944631799. The next prime is 3944631863. The reversal of 3944631811 is 1181364493.

3944631811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3944631811 - 2¹⁷ = 3944500739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3944601811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85306 + ... + 123151.

It is an arithmetic number, because the mean of its divisors is an integer number (500299200).

Almost surely, 2^3944631811 is an apocalyptic number.

3944631811 is a deficient number, since it is larger than the sum of its proper divisors (57761789).

3944631811 is a wasteful number, since it uses less digits than its factorization.

3944631811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208733.

The product of its digits is 62208, while the sum is 40.

The square root of 3944631811 is about 62806.3039113113. The cubic root of 3944631811 is about 1580.0427018048.

The spelling of 3944631811 in words is "three billion, nine hundred forty-four million, six hundred thirty-one thousand, eight hundred eleven".