9953687873 has 4 divisors (see below), whose sum is σ = 9953891028. Its totient is φ = 9953484720.

The previous prime is 9953687857. The next prime is 9953687879. The reversal of 9953687873 is 3787863599.

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 870073009 + 9083614864 = 29497^2 + 95308^2 .

It is a cyclic number.

It is not a de Polignac number, because 9953687873 - 2⁴ = 9953687857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9953687879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22163 + ... + 142823.

It is an arithmetic number, because the mean of its divisors is an integer number (2488472757).

Almost surely, 2^9953687873 is an apocalyptic number.

It is an amenable number.

9953687873 is a deficient number, since it is larger than the sum of its proper divisors (203155).

9953687873 is a wasteful number, since it uses less digits than its factorization.

9953687873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203154.

The product of its digits is 68584320, while the sum is 65.

The square root of 9953687873 is about 99768.1706407409. The cubic root of 9953687873 is about 2151.1036607264.

The spelling of 9953687873 in words is "nine billion, nine hundred fifty-three million, six hundred eighty-seven thousand, eight hundred seventy-three".