3972647293 has 4 divisors (see below), whose sum is σ = 3979065760. Its totient is φ = 3966228828.

The previous prime is 3972647291. The next prime is 3972647351. The reversal of 3972647293 is 3927462793.

It is a happy number.

3972647293 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3927462793 = 1013 ⋅3877061.

It is a cyclic number.

It is not a de Polignac number, because 3972647293 - 2¹ = 3972647291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3972647293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972647291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3208305 + ... + 3209542.

It is an arithmetic number, because the mean of its divisors is an integer number (994766440).

Almost surely, 2^3972647293 is an apocalyptic number.

It is an amenable number.

3972647293 is a deficient number, since it is larger than the sum of its proper divisors (6418467).

3972647293 is an equidigital number, since it uses as much as digits as its factorization.

3972647293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418466.

The product of its digits is 3429216, while the sum is 52.

The square root of 3972647293 is about 63028.9401227722. The cubic root of 3972647293 is about 1583.7744632898.

The spelling of 3972647293 in words is "three billion, nine hundred seventy-two million, six hundred forty-seven thousand, two hundred ninety-three".