9972715 has 4 divisors (see below), whose sum is σ = 11967264. Its totient is φ = 7978168.

The previous prime is 9972713. The next prime is 9972733. The reversal of 9972715 is 5172799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5172799 = 181 ⋅28579.

It is a cyclic number.

It is not a de Polignac number, because 9972715 - 2¹ = 9972713 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9972713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997267 + ... + 997276.

It is an arithmetic number, because the mean of its divisors is an integer number (2991816).

Almost surely, 2^9972715 is an apocalyptic number.

9972715 is a deficient number, since it is larger than the sum of its proper divisors (1994549).

9972715 is a wasteful number, since it uses less digits than its factorization.

9972715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994548.

The product of its digits is 39690, while the sum is 40.

The square root of 9972715 is about 3157.9605760680. The cubic root of 9972715 is about 215.2473446848.

The spelling of 9972715 in words is "nine million, nine hundred seventy-two thousand, seven hundred fifteen".