4509965 has 4 divisors (see below), whose sum is σ = 5411964. Its totient is φ = 3607968.

The previous prime is 4509961. The next prime is 4509983. The reversal of 4509965 is 5699054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 1190281 = 1822^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 4509965 - 2² = 4509961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450992 + ... + 451001.

It is an arithmetic number, because the mean of its divisors is an integer number (1352991).

Almost surely, 2^4509965 is an apocalyptic number.

It is an amenable number.

4509965 is a deficient number, since it is larger than the sum of its proper divisors (901999).

4509965 is an equidigital number, since it uses as much as digits as its factorization.

4509965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901998.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 4509965 is about 2123.6678177154. The cubic root of 4509965 is about 165.2181381746.

The spelling of 4509965 in words is "four million, five hundred nine thousand, nine hundred sixty-five".