3947884494 has 8 divisors (see below), whose sum is σ = 7895769000. Its totient is φ = 1315961496.

The previous prime is 3947884469. The next prime is 3947884537. The reversal of 3947884494 is 4944887493.

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

3947884494 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 3 ways as a sum of consecutive naturals, for example, 328990369 + ... + 328990380.

It is an arithmetic number, because the mean of its divisors is an integer number (986971125).

Almost surely, 2^3947884494 is an apocalyptic number.

3947884494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3947884494 is a wasteful number, since it uses less digits than its factorization.

3947884494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657980754.

The product of its digits is 27869184, while the sum is 60.

The square root of 3947884494 is about 62832.1931337750. The cubic root of 3947884494 is about 1580.4768754963.

Subtracting 3947884494 from its reverse (4944887493), we obtain a cube (997002999 = 999³).

The spelling of 3947884494 in words is "three billion, nine hundred forty-seven million, eight hundred eighty-four thousand, four hundred ninety-four".