4036221 has 12 divisors (see below), whose sum is σ = 6663072. Its totient is φ = 2306376.

The previous prime is 4036217. The next prime is 4036229. The reversal of 4036221 is 1226304.

It is a happy number.

4036221 is a `hidden beast` number, since 40 + 3 + 622 + 1 = 666.

It is not a de Polignac number, because 4036221 - 2² = 4036217 is a prime.

4036221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4036194 and 4036203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4036229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31971 + ... + 32096.

It is an arithmetic number, because the mean of its divisors is an integer number (555256).

Almost surely, 2^4036221 is an apocalyptic number.

It is an amenable number.

4036221 is a deficient number, since it is larger than the sum of its proper divisors (2626851).

4036221 is a wasteful number, since it uses less digits than its factorization.

4036221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64080 (or 64077 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4036221 is about 2009.0348429034. The cubic root of 4036221 is about 159.2178099525.

The spelling of 4036221 in words is "four million, thirty-six thousand, two hundred twenty-one".