3987073 has 6 divisors (see below), whose sum is σ = 4168514. Its totient is φ = 3813216.

The previous prime is 3987037. The next prime is 3987077. The reversal of 3987073 is 3707893.

3987073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3301489 + 685584 = 1817^2 + 828^2 .

It is not a de Polignac number, because 3987073 - 2¹⁷ = 3856001 is a prime.

It is a super-2 number, since 2×3987073² = 31793502214658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3240 + ... + 4297.

Almost surely, 2^3987073 is an apocalyptic number.

It is an amenable number.

3987073 is a deficient number, since it is larger than the sum of its proper divisors (181441).

3987073 is an equidigital number, since it uses as much as digits as its factorization.

3987073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7583 (or 7560 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 3987073 is about 1996.7656347203. The cubic root of 3987073 is about 158.5689178743.

The spelling of 3987073 in words is "three million, nine hundred eighty-seven thousand, seventy-three".