6239221 has 6 divisors (see below), whose sum is σ = 6628130. Its totient is φ = 5871936.

The previous prime is 6239209. The next prime is 6239227. The reversal of 6239221 is 1229326.

It is a happy number.

6239221 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 3 ways, for example, as 2436721 + 3802500 = 1561^2 + 1950^2 .

It is not a de Polignac number, because 6239221 - 2¹⁷ = 6108149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6239227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10506 + ... + 11083.

Almost surely, 2^6239221 is an apocalyptic number.

It is an amenable number.

6239221 is a deficient number, since it is larger than the sum of its proper divisors (388909).

6239221 is a wasteful number, since it uses less digits than its factorization.

6239221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21623 (or 21606 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 6239221 is about 2497.8432697029. The cubic root of 6239221 is about 184.0956201960.

The spelling of 6239221 in words is "six million, two hundred thirty-nine thousand, two hundred twenty-one".