4999987 has 4 divisors (see below), whose sum is σ = 5082016. Its totient is φ = 4917960.

The previous prime is 4999963. The next prime is 4999999. The reversal of 4999987 is 7899994.

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 4999987 - 2¹⁵ = 4967219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4999957) 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, 40923 + ... + 41044.

It is an arithmetic number, because the mean of its divisors is an integer number (1270504).

Almost surely, 2^4999987 is an apocalyptic number.

4999987 is a deficient number, since it is larger than the sum of its proper divisors (82029).

4999987 is an equidigital number, since it uses as much as digits as its factorization.

4999987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82028.

The product of its digits is 1469664, while the sum is 55.

The square root of 4999987 is about 2236.0650706095. The cubic root of 4999987 is about 170.9974464696.

It can be divided in two parts, 499998 and 7, that added together give a palindrome (500005).

The spelling of 4999987 in words is "four million, nine hundred ninety-nine thousand, nine hundred eighty-seven".