4987509 has 4 divisors (see below), whose sum is σ = 6650016. Its totient is φ = 3325004.

The previous prime is 4987501. The next prime is 4987523. The reversal of 4987509 is 9057894.

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 4987509 - 2³ = 4987501 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4987501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831249 + ... + 831254.

It is an arithmetic number, because the mean of its divisors is an integer number (1662504).

Almost surely, 2^4987509 is an apocalyptic number.

It is an amenable number.

4987509 is a deficient number, since it is larger than the sum of its proper divisors (1662507).

4987509 is a wasteful number, since it uses less digits than its factorization.

4987509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662506.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 4987509 is about 2233.2731583933. The cubic root of 4987509 is about 170.8550805284.

The spelling of 4987509 in words is "four million, nine hundred eighty-seven thousand, five hundred nine".