3987901 has 8 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 3766752.

The previous prime is 3987887. The next prime is 3987913. The reversal of 3987901 is 1097893.

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

It is a cyclic number.

It is not a de Polignac number, because 3987901 - 2¹¹ = 3985853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (526680).

Almost surely, 2^3987901 is an apocalyptic number.

It is an amenable number.

3987901 is a deficient number, since it is larger than the sum of its proper divisors (225539).

3987901 is a wasteful number, since it uses less digits than its factorization.

3987901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 3987901 is about 1996.9729592561. The cubic root of 3987901 is about 158.5798938439.

The spelling of 3987901 in words is "three million, nine hundred eighty-seven thousand, nine hundred one".