3987801 has 6 divisors (see below), whose sum is σ = 5760170. Its totient is φ = 2658528.

The previous prime is 3987799. The next prime is 3987811. The reversal of 3987801 is 1087893.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 301401 = 1920^2 + 549^2 .

It is not a de Polignac number, because 3987801 - 2¹ = 3987799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987811) 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 in 5 ways as a sum of consecutive naturals, for example, 221536 + ... + 221553.

Almost surely, 2^3987801 is an apocalyptic number.

It is an amenable number.

3987801 is a deficient number, since it is larger than the sum of its proper divisors (1772369).

3987801 is a wasteful number, since it uses less digits than its factorization.

3987801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443095 (or 443092 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3987801 is about 1996.9479212038. The cubic root of 3987801 is about 158.5785683244.

The spelling of 3987801 in words is "three million, nine hundred eighty-seven thousand, eight hundred one".