3997211 has 2 divisors, whose sum is σ = 3997212. Its totient is φ = 3997210.

The previous prime is 3997181. The next prime is 3997241. The reversal of 3997211 is 1127993.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (3997181) and next prime (3997241).

It is an emirp because it is prime and its reverse (1127993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3997211 - 2¹⁴ = 3980827 is a prime.

It is equal to p₂₈₂₉₆₅ and since 3997211 and 282965 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3997241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998605 + 1998606.

It is an arithmetic number, because the mean of its divisors is an integer number (1998606).

Almost surely, 2^3997211 is an apocalyptic number.

3997211 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997211 is an equidigital number, since it uses as much as digits as its factorization.

3997211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 32.

The square root of 3997211 is about 1999.3026284182. The cubic root of 3997211 is about 158.7032027726.

The spelling of 3997211 in words is "three million, nine hundred ninety-seven thousand, two hundred eleven".