3947747316 has 24 divisors (see below), whose sum is σ = 9219038304. Its totient is φ = 1314826080.

The previous prime is 3947747273. The next prime is 3947747317. The reversal of 3947747316 is 6137477493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947747317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121050 + ... + 150161.

It is an arithmetic number, because the mean of its divisors is an integer number (384126596).

Almost surely, 2^3947747316 is an apocalyptic number.

It is an amenable number.

3947747316 is an abundant number, since it is smaller than the sum of its proper divisors (5271290988).

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

3947747316 is a wasteful number, since it uses less digits than its factorization.

3947747316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272431 (or 272429 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 51.

The square root of 3947747316 is about 62831.1015023611. The cubic root of 3947747316 is about 1580.4585695599.

The spelling of 3947747316 in words is "three billion, nine hundred forty-seven million, seven hundred forty-seven thousand, three hundred sixteen".