4989665 has 4 divisors (see below), whose sum is σ = 5987604. Its totient is φ = 3991728.

The previous prime is 4989641. The next prime is 4989697. The reversal of 4989665 is 5669894.

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 2483776 + 2505889 = 1576^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 4989665 - 2⁸ = 4989409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498962 + ... + 498971.

It is an arithmetic number, because the mean of its divisors is an integer number (1496901).

Almost surely, 2^4989665 is an apocalyptic number.

It is an amenable number.

4989665 is a deficient number, since it is larger than the sum of its proper divisors (997939).

4989665 is an equidigital number, since it uses as much as digits as its factorization.

4989665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997938.

The product of its digits is 466560, while the sum is 47.

The square root of 4989665 is about 2233.7558058123. The cubic root of 4989665 is about 170.8796960554.

The spelling of 4989665 in words is "four million, nine hundred eighty-nine thousand, six hundred sixty-five".