3947888039495 has 16 divisors (see below), whose sum is σ = 4943780116992. Its totient is φ = 3020786213280.

The previous prime is 3947888039443. The next prime is 3947888039507. The reversal of 3947888039495 is 5949308887493.

It is not a de Polignac number, because 3947888039495 - 2²⁰ = 3947886990919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528854 + ... + 2859276.

It is an arithmetic number, because the mean of its divisors is an integer number (308986257312).

Almost surely, 2^{3947888039495} is an apocalyptic number.

3947888039495 is a deficient number, since it is larger than the sum of its proper divisors (995892077497).

3947888039495 is a wasteful number, since it uses less digits than its factorization.

3947888039495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345182.

The product of its (nonzero) digits is 1881169920, while the sum is 77.

The spelling of 3947888039495 in words is "three trillion, nine hundred forty-seven billion, eight hundred eighty-eight million, thirty-nine thousand, four hundred ninety-five".