40433221 has 8 divisors (see below), whose sum is σ = 42136920. Its totient is φ = 38750208.

The previous prime is 40433219. The next prime is 40433249. The reversal of 40433221 is 12233404.

40433221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10304100 + 30129121 = 3210^2 + 5489^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40433221 - 2¹ = 40433219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40433621) 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 7 ways as a sum of consecutive naturals, for example, 1116 + ... + 9061.

It is an arithmetic number, because the mean of its divisors is an integer number (5267115).

Almost surely, 2^40433221 is an apocalyptic number.

It is an amenable number.

40433221 is a deficient number, since it is larger than the sum of its proper divisors (1703699).

40433221 is a wasteful number, since it uses less digits than its factorization.

40433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40433221 is about 6358.7122123902. The cubic root of 40433221 is about 343.2254210979.

Adding to 40433221 its reverse (12233404), we get a palindrome (52666625).

The spelling of 40433221 in words is "forty million, four hundred thirty-three thousand, two hundred twenty-one".