2629409 has 2 divisors, whose sum is σ = 2629410. Its totient is φ = 2629408.

The previous prime is 2629381. The next prime is 2629421. The reversal of 2629409 is 9049262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 394384 = 1495^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2629409 - 2¹² = 2625313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2629469) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314704 + 1314705.

It is an arithmetic number, because the mean of its divisors is an integer number (1314705).

2^2629409 is an apocalyptic number.

It is an amenable number.

2629409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2629409 is an equidigital number, since it uses as much as digits as its factorization.

2629409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2629409 is about 1621.5452506791. The cubic root of 2629409 is about 138.0233979790.

The spelling of 2629409 in words is "two million, six hundred twenty-nine thousand, four hundred nine".