6222409 has 2 divisors, whose sum is σ = 6222410. Its totient is φ = 6222408.

The previous prime is 6222407. The next prime is 6222421. The reversal of 6222409 is 9042226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5664400 + 558009 = 2380^2 + 747^2 .

It is a cyclic number.

It is not a de Polignac number, because 6222409 - 2¹ = 6222407 is a prime.

Together with 6222407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6222407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3111204 + 3111205.

It is an arithmetic number, because the mean of its divisors is an integer number (3111205).

Almost surely, 2^6222409 is an apocalyptic number.

It is an amenable number.

6222409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6222409 is an equidigital number, since it uses as much as digits as its factorization.

6222409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6222409 is about 2494.4756964140. The cubic root of 6222409 is about 183.9301187846.

The spelling of 6222409 in words is "six million, two hundred twenty-two thousand, four hundred nine".