40432217 has 8 divisors (see below), whose sum is σ = 46451712. Its totient is φ = 34473600.

The previous prime is 40432211. The next prime is 40432237. The reversal of 40432217 is 71223404.

40432217 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 not a de Polignac number, because 40432217 - 2¹² = 40428121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40432192 and 40432201.

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 7 ways as a sum of consecutive naturals, for example, 13784 + ... + 16457.

It is an arithmetic number, because the mean of its divisors is an integer number (5806464).

Almost surely, 2^40432217 is an apocalyptic number.

It is an amenable number.

40432217 is a deficient number, since it is larger than the sum of its proper divisors (6019495).

40432217 is a wasteful number, since it uses less digits than its factorization.

40432217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30439.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40432217 is about 6358.6332650971. The cubic root of 40432217 is about 343.2225801900. Note that the first 3 decimals are identical.

The spelling of 40432217 in words is "forty million, four hundred thirty-two thousand, two hundred seventeen".