4609621 has 2 divisors, whose sum is σ = 4609622. Its totient is φ = 4609620.

The previous prime is 4609597. The next prime is 4609651. The reversal of 4609621 is 1269064.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 140625 = 2114^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 4609621 - 2⁹ = 4609109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4609621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4609651) 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 as a sum of consecutive naturals, namely, 2304810 + 2304811.

It is an arithmetic number, because the mean of its divisors is an integer number (2304811).

Almost surely, 2^4609621 is an apocalyptic number.

It is an amenable number.

4609621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4609621 is an equidigital number, since it uses as much as digits as its factorization.

4609621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4609621 is about 2147.0027945953. The cubic root of 4609621 is about 166.4262163799.

The spelling of 4609621 in words is "four million, six hundred nine thousand, six hundred twenty-one".