4959509 has 4 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 4939500.

The previous prime is 4959503. The next prime is 4959511. The reversal of 4959509 is 9059594.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4959509 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 (4959503) 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, 9629 + ... + 10130.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 2^4959509 is an apocalyptic number.

It is an amenable number.

4959509 is a deficient number, since it is larger than the sum of its proper divisors (20011).

4959509 is a wasteful number, since it uses less digits than its factorization.

4959509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20010.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 4959509 is about 2226.9955096497. The cubic root of 4959509 is about 170.5347521058.

The spelling of 4959509 in words is "four million, nine hundred fifty-nine thousand, five hundred nine".