9972943 has 4 divisors (see below), whose sum is σ = 10242520. Its totient is φ = 9703368.

The previous prime is 9972913. The next prime is 9972973. The reversal of 9972943 is 3492799.

9972943 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 3492799 = 61 ⋅57259.

It is an interprime number because it is at equal distance from previous prime (9972913) and next prime (9972973).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9972943 is a prime.

It is a Duffinian number.

9972943 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9972943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9972913) 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, 134733 + ... + 134806.

It is an arithmetic number, because the mean of its divisors is an integer number (2560630).

Almost surely, 2^9972943 is an apocalyptic number.

9972943 is a deficient number, since it is larger than the sum of its proper divisors (269577).

9972943 is a wasteful number, since it uses less digits than its factorization.

9972943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269576.

The product of its digits is 122472, while the sum is 43.

The square root of 9972943 is about 3157.9966751091. The cubic root of 9972943 is about 215.2489850278.

The spelling of 9972943 in words is "nine million, nine hundred seventy-two thousand, nine hundred forty-three".