9855489 has 16 divisors (see below), whose sum is σ = 15503360. Its totient is φ = 5449680.

The previous prime is 9855481. The next prime is 9855493. The reversal of 9855489 is 9845589.

It is a happy number.

It is not a de Polignac number, because 9855489 - 2³ = 9855481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9855481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6919 + ... + 8220.

It is an arithmetic number, because the mean of its divisors is an integer number (968960).

Almost surely, 2^9855489 is an apocalyptic number.

It is an amenable number.

9855489 is a deficient number, since it is larger than the sum of its proper divisors (5647871).

9855489 is a wasteful number, since it uses less digits than its factorization.

9855489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15180.

The product of its digits is 518400, while the sum is 48.

The square root of 9855489 is about 3139.3453139150. The cubic root of 9855489 is about 214.4006309966.

The spelling of 9855489 in words is "nine million, eight hundred fifty-five thousand, four hundred eighty-nine".