4661309 has 2 divisors, whose sum is σ = 4661310. Its totient is φ = 4661308.

The previous prime is 4661303. The next prime is 4661317. The reversal of 4661309 is 9031664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4622500 + 38809 = 2150^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661309 - 2⁸ = 4661053 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4661303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330654 + 2330655.

It is an arithmetic number, because the mean of its divisors is an integer number (2330655).

Almost surely, 2^4661309 is an apocalyptic number.

It is an amenable number.

4661309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661309 is an equidigital number, since it uses as much as digits as its factorization.

4661309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4661309 is about 2159.0064844738. The cubic root of 4661309 is about 167.0459552971.

The spelling of 4661309 in words is "four million, six hundred sixty-one thousand, three hundred nine".