6221438 has 8 divisors (see below), whose sum is σ = 9345432. Its totient is φ = 3106296.

The previous prime is 6221429. The next prime is 6221459. The reversal of 6221438 is 8341226.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 3527.

It is an arithmetic number, because the mean of its divisors is an integer number (1168179).

Almost surely, 2^6221438 is an apocalyptic number.

6221438 is a deficient number, since it is larger than the sum of its proper divisors (3123994).

6221438 is a wasteful number, since it uses less digits than its factorization.

6221438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426.

The product of its digits is 2304, while the sum is 26.

The square root of 6221438 is about 2494.2810587422. The cubic root of 6221438 is about 183.9205509234.

The spelling of 6221438 in words is "six million, two hundred twenty-one thousand, four hundred thirty-eight".