3987134617 has 4 divisors (see below), whose sum is σ = 4160488320. Its totient is φ = 3813780916.

The previous prime is 3987134573. The next prime is 3987134621. The reversal of 3987134617 is 7164317893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7164317893 = 73 ⋅98141341.

It is a cyclic number.

It is not a de Polignac number, because 3987134617 - 2¹⁵ = 3987101849 is a prime.

It is a super-3 number, since 3×3987134617³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987134677) 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, 86676817 + ... + 86676862.

It is an arithmetic number, because the mean of its divisors is an integer number (1040122080).

Almost surely, 2^3987134617 is an apocalyptic number.

It is an amenable number.

3987134617 is a deficient number, since it is larger than the sum of its proper divisors (173353703).

3987134617 is a wasteful number, since it uses less digits than its factorization.

3987134617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173353702.

The product of its digits is 762048, while the sum is 49.

The square root of 3987134617 is about 63143.7615049975. The cubic root of 3987134617 is about 1585.6973472170.

The spelling of 3987134617 in words is "three billion, nine hundred eighty-seven million, one hundred thirty-four thousand, six hundred seventeen".