4487021 has 16 divisors (see below), whose sum is σ = 5890560. Its totient is φ = 3311280.

The previous prime is 4487011. The next prime is 4487029. The reversal of 4487021 is 1207844.

It is not a de Polignac number, because 4487021 - 2⁶ = 4486957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4487029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71 + ... + 2996.

It is an arithmetic number, because the mean of its divisors is an integer number (368160).

Almost surely, 2^4487021 is an apocalyptic number.

It is an amenable number.

4487021 is a deficient number, since it is larger than the sum of its proper divisors (1403539).

4487021 is a wasteful number, since it uses less digits than its factorization.

4487021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 4487021 is about 2118.2589548967. The cubic root of 4487021 is about 164.9374847347.

The spelling of 4487021 in words is "four million, four hundred eighty-seven thousand, twenty-one".