2629309 has 2 divisors, whose sum is σ = 2629310. Its totient is φ = 2629308.

The previous prime is 2629307. The next prime is 2629351. The reversal of 2629309 is 9039262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2295225 + 334084 = 1515^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 2629309 - 2¹ = 2629307 is a prime.

Together with 2629307, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁵ + 2²¹ + 9 + 3 + 0 + 9² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2629307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314654 + 1314655.

It is an arithmetic number, because the mean of its divisors is an integer number (1314655).

2^2629309 is an apocalyptic number.

It is an amenable number.

2629309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2629309 is an equidigital number, since it uses as much as digits as its factorization.

2629309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 2629309 is about 1621.5144156004. The cubic root of 2629309 is about 138.0216482176.

The spelling of 2629309 in words is "two million, six hundred twenty-nine thousand, three hundred nine".