40450221 has 48 divisors (see below), whose sum is σ = 71884800. Its totient is φ = 21402144.

The previous prime is 40450199. The next prime is 40450237. The reversal of 40450221 is 12205404.

40450221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40450221 - 2¹¹ = 40448173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40450194 and 40450203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40450121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55900 + ... + 56618.

It is an arithmetic number, because the mean of its divisors is an integer number (1497600).

Almost surely, 2^40450221 is an apocalyptic number.

It is an amenable number.

40450221 is a deficient number, since it is larger than the sum of its proper divisors (31434579).

40450221 is a wasteful number, since it uses less digits than its factorization.

40450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40450221 is about 6360.0488205673. The cubic root of 40450221 is about 343.2735169826.

Adding to 40450221 its reverse (12205404), we get a palindrome (52655625).

It can be divided in two parts, 404 and 50221, that added together give a 4-th power (50625 = 15⁴).

The spelling of 40450221 in words is "forty million, four hundred fifty thousand, two hundred twenty-one".