40219917 has 8 divisors (see below), whose sum is σ = 54157920. Its totient is φ = 26547600.

The previous prime is 40219913. The next prime is 40219919. The reversal of 40219917 is 71991204.

40219917 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 40219917 - 2² = 40219913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40219913) 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, 66067 + ... + 66672.

It is an arithmetic number, because the mean of its divisors is an integer number (6769740).

Almost surely, 2^40219917 is an apocalyptic number.

It is an amenable number.

40219917 is a deficient number, since it is larger than the sum of its proper divisors (13938003).

40219917 is a wasteful number, since it uses less digits than its factorization.

40219917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132843.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 40219917 is about 6341.9174545243. The cubic root of 40219917 is about 342.6207988480.

The spelling of 40219917 in words is "forty million, two hundred nineteen thousand, nine hundred seventeen".