9987204097 has 4 divisors (see below), whose sum is σ = 10755450580. Its totient is φ = 9218957616.

The previous prime is 9987204083. The next prime is 9987204113. The reversal of 9987204097 is 7904027899.

It is a Cunningham number, because it is equal to 99936²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7904027899 = 3169 ⋅2494171.

It can be written as a sum of positive squares in 2 ways, for example, as 1477326096 + 8509878001 = 38436^2 + 92249^2 .

It is a cyclic number.

It is not a de Polignac number, because 9987204097 - 2⁷ = 9987203969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9987204797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384123222 + ... + 384123247.

It is an arithmetic number, because the mean of its divisors is an integer number (2688862645).

Almost surely, 2^9987204097 is an apocalyptic number.

It is an amenable number.

9987204097 is a deficient number, since it is larger than the sum of its proper divisors (768246483).

9987204097 is a wasteful number, since it uses less digits than its factorization.

9987204097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768246482.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 9987204097 is about 99936.0000050032. Note that the first 5 decimals coincide. The cubic root of 9987204097 is about 2153.5153665574.

The spelling of 9987204097 in words is "nine billion, nine hundred eighty-seven million, two hundred four thousand, ninety-seven".