3987937 has 2 divisors, whose sum is σ = 3987938. Its totient is φ = 3987936.

The previous prime is 3987931. The next prime is 3987943. The reversal of 3987937 is 7397893.

It is a balanced prime because it is at equal distance from previous prime (3987931) and next prime (3987943).

It can be written as a sum of positive squares in only one way, i.e., 3083536 + 904401 = 1756^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 3987937 - 2¹¹ = 3985889 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3987931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993968 + 1993969.

It is an arithmetic number, because the mean of its divisors is an integer number (1993969).

Almost surely, 2^3987937 is an apocalyptic number.

It is an amenable number.

3987937 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987937 is an equidigital number, since it uses as much as digits as its factorization.

3987937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 46.

The square root of 3987937 is about 1996.9819728781. The cubic root of 3987937 is about 158.5803710255.

The spelling of 3987937 in words is "three million, nine hundred eighty-seven thousand, nine hundred thirty-seven".