9973867 has 4 divisors (see below), whose sum is σ = 10114416. Its totient is φ = 9833320.

The previous prime is 9973853. The next prime is 9973871. The reversal of 9973867 is 7683799.

9973867 is digitally balanced in base 3, 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: 7683799 = 43 ⋅178693.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9973867 is a prime.

It is an Ulam number.

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 9973867.

It is not an unprimeable number, because it can be changed into a prime (9973837) 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, 70168 + ... + 70309.

It is an arithmetic number, because the mean of its divisors is an integer number (2528604).

Almost surely, 2^9973867 is an apocalyptic number.

9973867 is a deficient number, since it is larger than the sum of its proper divisors (140549).

9973867 is a wasteful number, since it uses less digits than its factorization.

9973867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140548.

The product of its digits is 571536, while the sum is 49.

The square root of 9973867 is about 3158.1429669982. The cubic root of 9973867 is about 215.2556324778.

The spelling of 9973867 in words is "nine million, nine hundred seventy-three thousand, eight hundred sixty-seven".