4920509 has 4 divisors (see below), whose sum is σ = 5367840. Its totient is φ = 4473180.

The previous prime is 4920499. The next prime is 4920511. The reversal of 4920509 is 9050294.

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 not a de Polignac number, because 4920509 - 2⁴ = 4920493 is a prime.

It is a super-2 number, since 2×4920509² = 48422817638162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4920529) 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, 223649 + ... + 223670.

It is an arithmetic number, because the mean of its divisors is an integer number (1341960).

Almost surely, 2^4920509 is an apocalyptic number.

It is an amenable number.

4920509 is a deficient number, since it is larger than the sum of its proper divisors (447331).

4920509 is a wasteful number, since it uses less digits than its factorization.

4920509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447330.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 4920509 is about 2218.2220357755. Note that the first 3 decimals coincide. The cubic root of 4920509 is about 170.0865649097.

The spelling of 4920509 in words is "four million, nine hundred twenty thousand, five hundred nine".