6309913 has 2 divisors, whose sum is σ = 6309914. Its totient is φ = 6309912.

The previous prime is 6309911. The next prime is 6309917. The reversal of 6309913 is 3199036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6215049 + 94864 = 2493^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 6309913 - 2¹ = 6309911 is a prime.

Together with 6309911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6309911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154956 + 3154957.

It is an arithmetic number, because the mean of its divisors is an integer number (3154957).

Almost surely, 2^6309913 is an apocalyptic number.

It is an amenable number.

6309913 is a deficient number, since it is larger than the sum of its proper divisors (1).

6309913 is an equidigital number, since it uses as much as digits as its factorization.

6309913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 6309913 is about 2511.9540202798. The cubic root of 6309913 is about 184.7882944711.

The spelling of 6309913 in words is "six million, three hundred nine thousand, nine hundred thirteen".