3972647307 has 4 divisors (see below), whose sum is σ = 5296863080. Its totient is φ = 2648431536.

The previous prime is 3972647291. The next prime is 3972647351. The reversal of 3972647307 is 7037462793.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7037462793 = 3 ⋅2345820931.

It is not a de Polignac number, because 3972647307 - 2⁴ = 3972647291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3972647507) 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, 662107882 + ... + 662107887.

It is an arithmetic number, because the mean of its divisors is an integer number (1324215770).

Almost surely, 2^3972647307 is an apocalyptic number.

3972647307 is a deficient number, since it is larger than the sum of its proper divisors (1324215773).

3972647307 is a wasteful number, since it uses less digits than its factorization.

3972647307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324215772.

The product of its (nonzero) digits is 1333584, while the sum is 48.

The square root of 3972647307 is about 63028.9402338323. The cubic root of 3972647307 is about 1583.7744651503.

The spelling of 3972647307 in words is "three billion, nine hundred seventy-two million, six hundred forty-seven thousand, three hundred seven".