3972802916 has 12 divisors (see below), whose sum is σ = 7192143420. Its totient is φ = 1917904800.

The previous prime is 3972802909. The next prime is 3972802919. The reversal of 3972802916 is 6192082793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2969814016 + 1002988900 = 54496^2 + 31670^2 .

It is not an unprimeable number, because it can be changed into a prime (3972802919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17124035 + ... + 17124266.

It is an arithmetic number, because the mean of its divisors is an integer number (599345285).

Almost surely, 2^3972802916 is an apocalyptic number.

It is an amenable number.

3972802916 is a deficient number, since it is larger than the sum of its proper divisors (3219340504).

3972802916 is a wasteful number, since it uses less digits than its factorization.

3972802916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34248334 (or 34248332 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 3972802916 is about 63030.1746467515. The cubic root of 3972802916 is about 1583.7951437494.

The spelling of 3972802916 in words is "three billion, nine hundred seventy-two million, eight hundred two thousand, nine hundred sixteen".