9969973 has 16 divisors (see below), whose sum is σ = 11476080. Its totient is φ = 8580096.

The previous prime is 9969959. The next prime is 9970001. The reversal of 9969973 is 3799699.

It can be written as a sum of positive squares in 8 ways, for example, as 2582449 + 7387524 = 1607^2 + 2718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9969973 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 9969973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43423 + ... + 43651.

It is an arithmetic number, because the mean of its divisors is an integer number (717255).

Almost surely, 2^9969973 is an apocalyptic number.

It is an amenable number.

9969973 is a deficient number, since it is larger than the sum of its proper divisors (1506107).

9969973 is a wasteful number, since it uses less digits than its factorization.

9969973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

The product of its digits is 826686, while the sum is 52.

The square root of 9969973 is about 3157.5264052736. The cubic root of 9969973 is about 215.2276154429.

The spelling of 9969973 in words is "nine million, nine hundred sixty-nine thousand, nine hundred seventy-three".