9975973 has 4 divisors (see below), whose sum is σ = 11401120. Its totient is φ = 8550828.

The previous prime is 9975943. The next prime is 9975989. The reversal of 9975973 is 3795799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9975973 - 2⁹ = 9975461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9975943) 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, 712563 + ... + 712576.

It is an arithmetic number, because the mean of its divisors is an integer number (2850280).

Almost surely, 2^9975973 is an apocalyptic number.

It is an amenable number.

9975973 is a deficient number, since it is larger than the sum of its proper divisors (1425147).

9975973 is a wasteful number, since it uses less digits than its factorization.

9975973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425146.

The product of its digits is 535815, while the sum is 49.

The square root of 9975973 is about 3158.4763731901. The cubic root of 9975973 is about 215.2707819499.

The spelling of 9975973 in words is "nine million, nine hundred seventy-five thousand, nine hundred seventy-three".