4999009 has 4 divisors (see below), whose sum is σ = 5006340. Its totient is φ = 4991680.

The previous prime is 4998997. The next prime is 4999021. The reversal of 4999009 is 9009994.

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

It is an interprime number because it is at equal distance from previous prime (4998997) and next prime (4999021).

It can be written as a sum of positive squares in 2 ways, for example, as 1830609 + 3168400 = 1353^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 4999009 - 2¹⁹ = 4474721 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4999409) 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, 2524 + ... + 4045.

It is an arithmetic number, because the mean of its divisors is an integer number (1251585).

Almost surely, 2^4999009 is an apocalyptic number.

It is an amenable number.

4999009 is a deficient number, since it is larger than the sum of its proper divisors (7331).

4999009 is an equidigital number, since it uses as much as digits as its factorization.

4999009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7330.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 4999009 is about 2235.8463721821. The cubic root of 4999009 is about 170.9862966801.

The spelling of 4999009 in words is "four million, nine hundred ninety-nine thousand, nine".