3947655884 has 12 divisors (see below), whose sum is σ = 7314774264. Its totient is φ = 1857720384.

The previous prime is 3947655883. The next prime is 3947655889. The reversal of 3947655884 is 4885567493.

It is not an unprimeable number, because it can be changed into a prime (3947655883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29026814 + ... + 29026949.

It is an arithmetic number, because the mean of its divisors is an integer number (609564522).

Almost surely, 2^3947655884 is an apocalyptic number.

3947655884 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3947655884 is a deficient number, since it is larger than the sum of its proper divisors (3367118380).

3947655884 is a wasteful number, since it uses less digits than its factorization.

3947655884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58053784 (or 58053782 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 59.

The square root of 3947655884 is about 62830.3738967070. The cubic root of 3947655884 is about 1580.4463680356.

The spelling of 3947655884 in words is "three billion, nine hundred forty-seven million, six hundred fifty-five thousand, eight hundred eighty-four".