3987733 has 2 divisors, whose sum is σ = 3987734. Its totient is φ = 3987732.

The previous prime is 3987727. The next prime is 3987757. The reversal of 3987733 is 3377893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2748964 + 1238769 = 1658^2 + 1113^2 .

It is an emirp because it is prime and its reverse (3377893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3987733 - 2¹⁷ = 3856661 is a prime.

3987733 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3987833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993866 + 1993867.

It is an arithmetic number, because the mean of its divisors is an integer number (1993867).

Almost surely, 2^3987733 is an apocalyptic number.

It is an amenable number.

3987733 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987733 is an equidigital number, since it uses as much as digits as its factorization.

3987733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 3987733 is about 1996.9308951489. The cubic root of 3987733 is about 158.5776669585.

The spelling of 3987733 in words is "three million, nine hundred eighty-seven thousand, seven hundred thirty-three".