7972247 has 4 divisors (see below), whose sum is σ = 7980960. Its totient is φ = 7963536.

The previous prime is 7972231. The next prime is 7972253. The reversal of 7972247 is 7422797.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7422797 = 137 ⋅54181.

It is a cyclic number.

It is not a de Polignac number, because 7972247 - 2⁴ = 7972231 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 7972247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7972277) 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, 2798 + ... + 4875.

It is an arithmetic number, because the mean of its divisors is an integer number (1995240).

Almost surely, 2^7972247 is an apocalyptic number.

7972247 is a deficient number, since it is larger than the sum of its proper divisors (8713).

7972247 is a wasteful number, since it uses less digits than its factorization.

7972247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712.

The product of its digits is 49392, while the sum is 38.

The square root of 7972247 is about 2823.5167787708. The cubic root of 7972247 is about 199.7684570427.

The spelling of 7972247 in words is "seven million, nine hundred seventy-two thousand, two hundred forty-seven".