40809219 has 8 divisors (see below), whose sum is σ = 59358912. Its totient is φ = 24732840.

The previous prime is 40809173. The next prime is 40809221. The reversal of 40809219 is 91290804.

40809219 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 40809219 - 2⁷ = 40809091 is a prime.

It is a super-2 number, since 2×40809219² = 3330784710779922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1236643 = 40809219 / (4 + 0 + 8 + 0 + 9 + 2 + 1 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 40809219.

It is not an unprimeable number, because it can be changed into a prime (40809229) 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, 618289 + ... + 618354.

It is an arithmetic number, because the mean of its divisors is an integer number (7419864).

Almost surely, 2^40809219 is an apocalyptic number.

40809219 is a deficient number, since it is larger than the sum of its proper divisors (18549693).

40809219 is a wasteful number, since it uses less digits than its factorization.

40809219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236657.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 40809219 is about 6388.2093735256. The cubic root of 40809219 is about 344.2860513926.

The spelling of 40809219 in words is "forty million, eight hundred nine thousand, two hundred nineteen".