3972747223 has 4 divisors (see below), whose sum is σ = 3973381848. Its totient is φ = 3972112600.

The previous prime is 3972747211. The next prime is 3972747227. The reversal of 3972747223 is 3227472793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3227472793 = 887 ⋅3638639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3972747223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972747227) 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, 307828 + ... + 320473.

It is an arithmetic number, because the mean of its divisors is an integer number (993345462).

Almost surely, 2^3972747223 is an apocalyptic number.

3972747223 is a deficient number, since it is larger than the sum of its proper divisors (634625).

3972747223 is an equidigital number, since it uses as much as digits as its factorization.

3972747223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634624.

The product of its digits is 889056, while the sum is 46.

The square root of 3972747223 is about 63029.7328488706. The cubic root of 3972747223 is about 1583.7877428692.

The spelling of 3972747223 in words is "three billion, nine hundred seventy-two million, seven hundred forty-seven thousand, two hundred twenty-three".