3987089 has 4 divisors (see below), whose sum is σ = 4079856. Its totient is φ = 3894324.

The previous prime is 3987079. The next prime is 3987107. The reversal of 3987089 is 9807893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3987089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3987019) 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, 46319 + ... + 46404.

It is an arithmetic number, because the mean of its divisors is an integer number (1019964).

Almost surely, 2^3987089 is an apocalyptic number.

It is an amenable number.

3987089 is a deficient number, since it is larger than the sum of its proper divisors (92767).

3987089 is an equidigital number, since it uses as much as digits as its factorization.

3987089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92766.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3987089 is about 1996.7696411955. The cubic root of 3987089 is about 158.5691299847.

The spelling of 3987089 in words is "three million, nine hundred eighty-seven thousand, eighty-nine".