4787987 has 4 divisors (see below), whose sum is σ = 4953120. Its totient is φ = 4622856.

The previous prime is 4787971. The next prime is 4788011. The reversal of 4787987 is 7897874.

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

It is a cyclic number.

It is not a de Polignac number, because 4787987 - 2⁴ = 4787971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4787957) 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, 82523 + ... + 82580.

It is an arithmetic number, because the mean of its divisors is an integer number (1238280).

Almost surely, 2^4787987 is an apocalyptic number.

4787987 is a deficient number, since it is larger than the sum of its proper divisors (165133).

4787987 is a wasteful number, since it uses less digits than its factorization.

4787987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165132.

The product of its digits is 790272, while the sum is 50.

The square root of 4787987 is about 2188.1469329092. The cubic root of 4787987 is about 168.5456911021.

The spelling of 4787987 in words is "four million, seven hundred eighty-seven thousand, nine hundred eighty-seven".