9973693 has 4 divisors (see below), whose sum is σ = 9983740. Its totient is φ = 9963648.

The previous prime is 9973673. The next prime is 9973751. The reversal of 9973693 is 3963799.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 9566649 = 638^2 + 3093^2 .

It is a 4-Lehmer number, since φ(9973693) divides (9973693-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 9973693 - 2¹⁷ = 9842621 is a prime.

It is a Duffinian number.

9973693 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9973603) 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, 3348 + ... + 5581.

It is an arithmetic number, because the mean of its divisors is an integer number (2495935).

Almost surely, 2^9973693 is an apocalyptic number.

It is an amenable number.

9973693 is a deficient number, since it is larger than the sum of its proper divisors (10047).

9973693 is a wasteful number, since it uses less digits than its factorization.

9973693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046.

The product of its digits is 275562, while the sum is 46.

The square root of 9973693 is about 3158.1154190435. The cubic root of 9973693 is about 215.2543807166.

The spelling of 9973693 in words is "nine million, nine hundred seventy-three thousand, six hundred ninety-three".