4664421 has 12 divisors (see below), whose sum is σ = 6881472. Its totient is φ = 3043176.

The previous prime is 4664419. The next prime is 4664431. The reversal of 4664421 is 1244664.

It is not a de Polignac number, because 4664421 - 2¹ = 4664419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4664431) 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 11 ways as a sum of consecutive naturals, for example, 5091 + ... + 5936.

It is an arithmetic number, because the mean of its divisors is an integer number (573456).

Almost surely, 2^4664421 is an apocalyptic number.

It is an amenable number.

4664421 is a deficient number, since it is larger than the sum of its proper divisors (2217051).

4664421 is a wasteful number, since it uses less digits than its factorization.

4664421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080 (or 11077 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 4664421 is about 2159.7270660896. The cubic root of 4664421 is about 167.0831216359.

It can be divided in two parts, 46644 and 21, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 4664421 in words is "four million, six hundred sixty-four thousand, four hundred twenty-one".