9972445 has 8 divisors (see below), whose sum is σ = 13676544. Its totient is φ = 6838224.

The previous prime is 9972439. The next prime is 9972449. The reversal of 9972445 is 5442799.

9972445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9972445 - 2¹¹ = 9970397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9972398 and 9972407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9972449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142429 + ... + 142498.

It is an arithmetic number, because the mean of its divisors is an integer number (1709568).

Almost surely, 2^9972445 is an apocalyptic number.

It is an amenable number.

9972445 is a deficient number, since it is larger than the sum of its proper divisors (3704099).

9972445 is a wasteful number, since it uses less digits than its factorization.

9972445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284939.

The product of its digits is 90720, while the sum is 40.

The square root of 9972445 is about 3157.9178266700. The cubic root of 9972445 is about 215.2454021409.

The spelling of 9972445 in words is "nine million, nine hundred seventy-two thousand, four hundred forty-five".