40432213 has 4 divisors (see below), whose sum is σ = 40700128. Its totient is φ = 40164300.

The previous prime is 40432211. The next prime is 40432237. The reversal of 40432213 is 31223404.

40432213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40432213 - 2¹ = 40432211 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 (40432211) 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 3 ways as a sum of consecutive naturals, for example, 133731 + ... + 134032.

It is an arithmetic number, because the mean of its divisors is an integer number (10175032).

Almost surely, 2^40432213 is an apocalyptic number.

It is an amenable number.

40432213 is a deficient number, since it is larger than the sum of its proper divisors (267915).

40432213 is a wasteful number, since it uses less digits than its factorization.

40432213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267914.

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

The square root of 40432213 is about 6358.6329505641. The cubic root of 40432213 is about 343.2225688715. Note that the first 3 decimals are identical.

Adding to 40432213 its reverse (31223404), we get a palindrome (71655617).

The spelling of 40432213 in words is "forty million, four hundred thirty-two thousand, two hundred thirteen".