4645409 has 2 divisors, whose sum is σ = 4645410. Its totient is φ = 4645408.

The previous prime is 4645363. The next prime is 4645411. The reversal of 4645409 is 9045464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4635409 + 10000 = 2153^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4645409 - 2⁸ = 4645153 is a prime.

Together with 4645411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4645429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322704 + 2322705.

It is an arithmetic number, because the mean of its divisors is an integer number (2322705).

Almost surely, 2^4645409 is an apocalyptic number.

It is an amenable number.

4645409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645409 is an equidigital number, since it uses as much as digits as its factorization.

4645409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4645409 is about 2155.3210897683. The cubic root of 4645409 is about 166.8558043914.

The spelling of 4645409 in words is "four million, six hundred forty-five thousand, four hundred nine".