3966015689 has 4 divisors (see below), whose sum is σ = 4058248656. Its totient is φ = 3873782724.

The previous prime is 3966015671. The next prime is 3966015701. The reversal of 3966015689 is 9865106693.

3966015689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 9865106693 = 13 ⋅758854361.

It is a cyclic number.

It is not a de Polignac number, because 3966015689 - 2²⁰ = 3964967113 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 3966015689.

It is not an unprimeable number, because it can be changed into a prime (3966012689) 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, 46116419 + ... + 46116504.

It is an arithmetic number, because the mean of its divisors is an integer number (1014562164).

Almost surely, 2^3966015689 is an apocalyptic number.

It is an amenable number.

3966015689 is a deficient number, since it is larger than the sum of its proper divisors (92232967).

3966015689 is an equidigital number, since it uses as much as digits as its factorization.

3966015689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92232966.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 3966015689 is about 62976.3105381698. The cubic root of 3966015689 is about 1582.8926990679.

The spelling of 3966015689 in words is "three billion, nine hundred sixty-six million, fifteen thousand, six hundred eighty-nine".