3947704678 has 8 divisors (see below), whose sum is σ = 5922059472. Its totient is φ = 1973684856.

The previous prime is 3947704669. The next prime is 3947704679. The reversal of 3947704678 is 8764077493.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947704679) 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, 51850 + ... + 102877.

It is an arithmetic number, because the mean of its divisors is an integer number (740257434).

Almost surely, 2^3947704678 is an apocalyptic number.

3947704678 is a deficient number, since it is larger than the sum of its proper divisors (1974354794).

3947704678 is a wasteful number, since it uses less digits than its factorization.

3947704678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167486.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The square root of 3947704678 is about 62830.7621949631. The cubic root of 3947704678 is about 1580.4528795777.

The spelling of 3947704678 in words is "three billion, nine hundred forty-seven million, seven hundred four thousand, six hundred seventy-eight".