9873204497 has 4 divisors (see below), whose sum is σ = 10632681780. Its totient is φ = 9113727216.

The previous prime is 9873204469. The next prime is 9873204553. The reversal of 9873204497 is 7944023789.

It is a Cunningham number, because it is equal to 99364²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1460462656 + 8412741841 = 38216^2 + 91721^2 .

It is a cyclic number.

It is not a de Polignac number, because 9873204497 - 2¹² = 9873200401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9873204437) 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, 379738622 + ... + 379738647.

It is an arithmetic number, because the mean of its divisors is an integer number (2658170445).

Almost surely, 2^9873204497 is an apocalyptic number.

It is an amenable number.

9873204497 is a deficient number, since it is larger than the sum of its proper divisors (759477283).

9873204497 is a wasteful number, since it uses less digits than its factorization.

9873204497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759477282.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 9873204497 is about 99364.0000050320. Note that the first 5 decimals coincide. The cubic root of 9873204497 is about 2145.2901766550.

The spelling of 9873204497 in words is "nine billion, eight hundred seventy-three million, two hundred four thousand, four hundred ninety-seven".