4399555 has 16 divisors (see below), whose sum is σ = 5601024. Its totient is φ = 3310560.

The previous prime is 4399553. The next prime is 4399573. The reversal of 4399555 is 5559934.

It is a happy number.

It is not a de Polignac number, because 4399555 - 2¹ = 4399553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4399553) 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, 7420 + ... + 7990.

It is an arithmetic number, because the mean of its divisors is an integer number (350064).

Almost surely, 2^4399555 is an apocalyptic number.

4399555 is a deficient number, since it is larger than the sum of its proper divisors (1201469).

4399555 is a wasteful number, since it uses less digits than its factorization.

4399555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its digits is 121500, while the sum is 40.

The square root of 4399555 is about 2097.5116209452. The cubic root of 4399555 is about 163.8587297223.

The spelling of 4399555 in words is "four million, three hundred ninety-nine thousand, five hundred fifty-five".