9989255 has 4 divisors (see below), whose sum is σ = 11987112. Its totient is φ = 7991400.

The previous prime is 9989237. The next prime is 9989261. The reversal of 9989255 is 5529899.

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

It is not a de Polignac number, because 9989255 - 2⁶ = 9989191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 998921 + ... + 998930.

It is an arithmetic number, because the mean of its divisors is an integer number (2996778).

Almost surely, 2^9989255 is an apocalyptic number.

9989255 is a deficient number, since it is larger than the sum of its proper divisors (1997857).

9989255 is a wasteful number, since it uses less digits than its factorization.

9989255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997856.

The product of its digits is 291600, while the sum is 47.

The square root of 9989255 is about 3160.5782698740. The cubic root of 9989255 is about 215.3662766797.

The spelling of 9989255 in words is "nine million, nine hundred eighty-nine thousand, two hundred fifty-five".