9873555 has 16 divisors (see below), whose sum is σ = 16485120. Its totient is φ = 5036768.

The previous prime is 9873527. The next prime is 9873557. The reversal of 9873555 is 5553789.

It is a cyclic number.

It is not a de Polignac number, because 9873555 - 2⁸ = 9873299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9873557) 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 15 ways as a sum of consecutive naturals, for example, 13965 + ... + 14654.

It is an arithmetic number, because the mean of its divisors is an integer number (1030320).

Almost surely, 2^9873555 is an apocalyptic number.

9873555 is a deficient number, since it is larger than the sum of its proper divisors (6611565).

9873555 is a wasteful number, since it uses less digits than its factorization.

9873555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28650.

The product of its digits is 189000, while the sum is 42.

The square root of 9873555 is about 3142.2213480275. The cubic root of 9873555 is about 214.5315562595.

It can be divided in two parts, 98735 and 55, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 9873555 in words is "nine million, eight hundred seventy-three thousand, five hundred fifty-five".