3987538 has 8 divisors (see below), whose sum is σ = 6021900. Its totient is φ = 1980240.

The previous prime is 3987523. The next prime is 3987551. The reversal of 3987538 is 8357893.

It is a happy number.

3987538 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 2 ways, for example, as 3286969 + 700569 = 1813^2 + 837^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3987494 and 3987503.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6393 + ... + 6988.

Almost surely, 2^3987538 is an apocalyptic number.

3987538 is a deficient number, since it is larger than the sum of its proper divisors (2034362).

3987538 is a wasteful number, since it uses less digits than its factorization.

3987538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532.

The product of its digits is 181440, while the sum is 43.

The square root of 3987538 is about 1996.8820696275. The cubic root of 3987538 is about 158.5750821023.

The spelling of 3987538 in words is "three million, nine hundred eighty-seven thousand, five hundred thirty-eight".