3972747211 has 2 divisors, whose sum is σ = 3972747212. Its totient is φ = 3972747210.

The previous prime is 3972747209. The next prime is 3972747227. The reversal of 3972747211 is 1127472793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3972747211 - 2¹ = 3972747209 is a prime.

Together with 3972747209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3972747271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986373605 + 1986373606.

It is an arithmetic number, because the mean of its divisors is an integer number (1986373606).

Almost surely, 2^3972747211 is an apocalyptic number.

3972747211 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972747211 is an equidigital number, since it uses as much as digits as its factorization.

3972747211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 43.

The square root of 3972747211 is about 63029.7327536775. The cubic root of 3972747211 is about 1583.7877412745.

The spelling of 3972747211 in words is "three billion, nine hundred seventy-two million, seven hundred forty-seven thousand, two hundred eleven".