3991002211 has 8 divisors (see below), whose sum is σ = 4594439520. Its totient is φ = 3395888448.

The previous prime is 3991002209. The next prime is 3991002247. The reversal of 3991002211 is 1122001993.

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 3991002211 - 2¹ = 3991002209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3991002211.

It is not an unprimeable number, because it can be changed into a prime (3991002311) 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, 2079856 + ... + 2081773.

It is an arithmetic number, because the mean of its divisors is an integer number (574304940).

Almost surely, 2^3991002211 is an apocalyptic number.

3991002211 is a deficient number, since it is larger than the sum of its proper divisors (603437309).

3991002211 is a wasteful number, since it uses less digits than its factorization.

3991002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161773.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 3991002211 is about 63174.3793875334. The cubic root of 3991002211 is about 1586.2099000664.

The spelling of 3991002211 in words is "three billion, nine hundred ninety-one million, two thousand, two hundred eleven".