40027221 has 48 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 23184000.

The previous prime is 40027213. The next prime is 40027223. The reversal of 40027221 is 12272004.

It is not a de Polignac number, because 40027221 - 2³ = 40027213 is a prime.

It is a super-3 number, since 3×40027221³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40027194 and 40027203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40027223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159346 + ... + 159596.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^40027221 is an apocalyptic number.

It is an amenable number.

40027221 is a deficient number, since it is larger than the sum of its proper divisors (26016939).

40027221 is a wasteful number, since it uses less digits than its factorization.

40027221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 40027221 is about 6326.7069633420. The cubic root of 40027221 is about 342.0727505026.

Adding to 40027221 its reverse (12272004), we get a palindrome (52299225).

The spelling of 40027221 in words is "forty million, twenty-seven thousand, two hundred twenty-one".