3990885911 has 4 divisors (see below), whose sum is σ = 3998517192. Its totient is φ = 3983254632.

The previous prime is 3990885907. The next prime is 3990885937. The reversal of 3990885911 is 1195880993.

3990885911 is digitally balanced in base 2, 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: 1195880993 = 9473 ⋅126241.

It is a cyclic number.

It is not a de Polignac number, because 3990885911 - 2² = 3990885907 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 (3990885991) 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, 3814856 + ... + 3815901.

It is an arithmetic number, because the mean of its divisors is an integer number (999629298).

Almost surely, 2^3990885911 is an apocalyptic number.

3990885911 is a deficient number, since it is larger than the sum of its proper divisors (7631281).

3990885911 is an equidigital number, since it uses as much as digits as its factorization.

3990885911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7631280.

The product of its (nonzero) digits is 699840, while the sum is 53.

The square root of 3990885911 is about 63173.4589127428. The cubic root of 3990885911 is about 1586.1944922404.

The spelling of 3990885911 in words is "three billion, nine hundred ninety million, eight hundred eighty-five thousand, nine hundred eleven".