3987835 has 4 divisors (see below), whose sum is σ = 4785408. Its totient is φ = 3190264.

The previous prime is 3987833. The next prime is 3987839. The reversal of 3987835 is 5387893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3987835 - 2¹ = 3987833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3987791 and 3987800.

It is not an unprimeable number, because it can be changed into a prime (3987833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398779 + ... + 398788.

It is an arithmetic number, because the mean of its divisors is an integer number (1196352).

Almost surely, 2^3987835 is an apocalyptic number.

3987835 is a deficient number, since it is larger than the sum of its proper divisors (797573).

3987835 is an equidigital number, since it uses as much as digits as its factorization.

3987835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797572.

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

The square root of 3987835 is about 1996.9564341768. The cubic root of 3987835 is about 158.5790190035.

The spelling of 3987835 in words is "three million, nine hundred eighty-seven thousand, eight hundred thirty-five".