4184987 has 4 divisors (see below), whose sum is σ = 4194960. Its totient is φ = 4175016.

The previous prime is 4184977. The next prime is 4184989. The reversal of 4184987 is 7894814.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7894814 = 2 ⋅3947407.

It is a cyclic number.

It is not a de Polignac number, because 4184987 - 2¹⁸ = 3922843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4184989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (1048740).

Almost surely, 2^4184987 is an apocalyptic number.

4184987 is a deficient number, since it is larger than the sum of its proper divisors (9973).

4184987 is an equidigital number, since it uses as much as digits as its factorization.

4184987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9972.

The product of its digits is 64512, while the sum is 41.

The square root of 4184987 is about 2045.7240771913. The cubic root of 4184987 is about 161.1503937858.

The spelling of 4184987 in words is "four million, one hundred eighty-four thousand, nine hundred eighty-seven".