3986891501 has 8 divisors (see below), whose sum is σ = 4082295360. Its totient is φ = 3891609792.

The previous prime is 3986891453. The next prime is 3986891533. The reversal of 3986891501 is 1051986893.

It is a happy number.

3986891501 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3986891501 - 2²⁶ = 3919782637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3986891501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986891591) 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, 37301 + ... + 96773.

It is an arithmetic number, because the mean of its divisors is an integer number (510286920).

Almost surely, 2^3986891501 is an apocalyptic number.

It is an amenable number.

3986891501 is a deficient number, since it is larger than the sum of its proper divisors (95403859).

3986891501 is a wasteful number, since it uses less digits than its factorization.

3986891501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61075.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 3986891501 is about 63141.8363765261. The cubic root of 3986891501 is about 1585.6651172015.

The spelling of 3986891501 in words is "three billion, nine hundred eighty-six million, eight hundred ninety-one thousand, five hundred one".