40443213 has 8 divisors (see below), whose sum is σ = 54023328. Its totient is φ = 26912624.

The previous prime is 40443211. The next prime is 40443217. The reversal of 40443213 is 31234404.

40443213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40443213 - 2¹ = 40443211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40443213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443211) 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, 10431 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (6752916).

Almost surely, 2^40443213 is an apocalyptic number.

It is an amenable number.

40443213 is a deficient number, since it is larger than the sum of its proper divisors (13580115).

40443213 is a wasteful number, since it uses less digits than its factorization.

40443213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24763.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40443213 is about 6359.4978575356. The cubic root of 40443213 is about 343.2536917943.

Adding to 40443213 its reverse (31234404), we get a palindrome (71677617).

The spelling of 40443213 in words is "forty million, four hundred forty-three thousand, two hundred thirteen".