4499421 has 16 divisors (see below), whose sum is σ = 6368640. Its totient is φ = 2819520.

The previous prime is 4499401. The next prime is 4499423. The reversal of 4499421 is 1249944.

It is not a de Polignac number, because 4499421 - 2⁵ = 4499389 is a prime.

4499421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4499423) 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, 3675 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (398040).

Almost surely, 2^4499421 is an apocalyptic number.

It is an amenable number.

4499421 is a deficient number, since it is larger than the sum of its proper divisors (1869219).

4499421 is a wasteful number, since it uses less digits than its factorization.

4499421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 10368, while the sum is 33.

The square root of 4499421 is about 2121.1838675608. The cubic root of 4499421 is about 165.0892813415.

It can be divided in two parts, 449 and 9421, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 4499421 in words is "four million, four hundred ninety-nine thousand, four hundred twenty-one".