4609421 has 4 divisors (see below), whose sum is σ = 4758144. Its totient is φ = 4460700.

The previous prime is 4609411. The next prime is 4609427. The reversal of 4609421 is 1249064.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4609421 - 2¹⁴ = 4593037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4609427) 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, 74315 + ... + 74376.

It is an arithmetic number, because the mean of its divisors is an integer number (1189536).

Almost surely, 2^4609421 is an apocalyptic number.

It is an amenable number.

4609421 is a deficient number, since it is larger than the sum of its proper divisors (148723).

4609421 is a wasteful number, since it uses less digits than its factorization.

4609421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148722.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4609421 is about 2146.9562175322. The cubic root of 4609421 is about 166.4238094051.

The spelling of 4609421 in words is "four million, six hundred nine thousand, four hundred twenty-one".