6222809 has 4 divisors (see below), whose sum is σ = 6231504. Its totient is φ = 6214116.

The previous prime is 6222781. The next prime is 6222817. The reversal of 6222809 is 9082226.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9082226 = 2 ⋅4541113.

It is a cyclic number.

It is not a de Polignac number, because 6222809 - 2¹² = 6218713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6222829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3167 + ... + 4740.

It is an arithmetic number, because the mean of its divisors is an integer number (1557876).

Almost surely, 2^6222809 is an apocalyptic number.

It is an amenable number.

6222809 is a deficient number, since it is larger than the sum of its proper divisors (8695).

6222809 is an equidigital number, since it uses as much as digits as its factorization.

6222809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 6222809 is about 2494.5558722947. Note that the first 3 decimals coincide. The cubic root of 6222809 is about 183.9340599415.

The spelling of 6222809 in words is "six million, two hundred twenty-two thousand, eight hundred nine".