3967237 has 2 divisors, whose sum is σ = 3967238. Its totient is φ = 3967236.

The previous prime is 3967231. The next prime is 3967241. The reversal of 3967237 is 7327693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2313441 + 1653796 = 1521^2 + 1286^2 .

It is an emirp because it is prime and its reverse (7327693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3967237 - 2¹⁹ = 3442949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3967196 and 3967205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3967231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983618 + 1983619.

It is an arithmetic number, because the mean of its divisors is an integer number (1983619).

Almost surely, 2^3967237 is an apocalyptic number.

It is an amenable number.

3967237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3967237 is an equidigital number, since it uses as much as digits as its factorization.

3967237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 37.

The square root of 3967237 is about 1991.7924088619. The cubic root of 3967237 is about 158.3055163197.

It can be divided in two parts, 39 and 67237, that added together give a palindrome (67276).

The spelling of 3967237 in words is "three million, nine hundred sixty-seven thousand, two hundred thirty-seven".