9855539 has 4 divisors (see below), whose sum is σ = 10095960. Its totient is φ = 9615120.

The previous prime is 9855533. The next prime is 9855541. The reversal of 9855539 is 9355589.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9855539 - 2¹⁶ = 9790003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9855539.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9855533) 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 3 ways as a sum of consecutive naturals, for example, 120149 + ... + 120230.

It is an arithmetic number, because the mean of its divisors is an integer number (2523990).

Almost surely, 2^9855539 is an apocalyptic number.

9855539 is a deficient number, since it is larger than the sum of its proper divisors (240421).

9855539 is a wasteful number, since it uses less digits than its factorization.

9855539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240420.

The product of its digits is 243000, while the sum is 44.

The square root of 9855539 is about 3139.3532773487. The cubic root of 9855539 is about 214.4009935700.

The spelling of 9855539 in words is "nine million, eight hundred fifty-five thousand, five hundred thirty-nine".