4089555 has 16 divisors (see below), whose sum is σ = 7270560. Its totient is φ = 2181024.

The previous prime is 4089521. The next prime is 4089559. The reversal of 4089555 is 5559804.

It is a happy number.

It is not a de Polignac number, because 4089555 - 2¹⁴ = 4073171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4089559) 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, 15012 + ... + 15281.

It is an arithmetic number, because the mean of its divisors is an integer number (454410).

Almost surely, 2^4089555 is an apocalyptic number.

4089555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4089555 is a deficient number, since it is larger than the sum of its proper divisors (3181005).

4089555 is a wasteful number, since it uses less digits than its factorization.

4089555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30307 (or 30301 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 4089555 is about 2022.2648194537. The cubic root of 4089555 is about 159.9160366754.

The spelling of 4089555 in words is "four million, eighty-nine thousand, five hundred fifty-five".