9120855 has 16 divisors (see below), whose sum is σ = 15361920. Its totient is φ = 4608288.

The previous prime is 9120829. The next prime is 9120871. The reversal of 9120855 is 5580219.

9120855 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9120855 - 2⁶ = 9120791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15717 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 2^9120855 is an apocalyptic number.

9120855 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9120855 is a deficient number, since it is larger than the sum of its proper divisors (6241065).

9120855 is a wasteful number, since it uses less digits than its factorization.

9120855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32030.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 9120855 is about 3020.0753301863. The cubic root of 9120855 is about 208.9353141850.

The spelling of 9120855 in words is "nine million, one hundred twenty thousand, eight hundred fifty-five".