40008219 has 4 divisors (see below), whose sum is σ = 53344296. Its totient is φ = 26672144.

The previous prime is 40008217. The next prime is 40008223. The reversal of 40008219 is 91280004.

40008219 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.

It is a cyclic number.

It is not a de Polignac number, because 40008219 - 2¹ = 40008217 is a prime.

It is a super-2 number, since 2×40008219² = 3201315175103922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40008217) 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, 6668034 + ... + 6668039.

It is an arithmetic number, because the mean of its divisors is an integer number (13336074).

Almost surely, 2^40008219 is an apocalyptic number.

40008219 is a deficient number, since it is larger than the sum of its proper divisors (13336077).

40008219 is a wasteful number, since it uses less digits than its factorization.

40008219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336076.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 40008219 is about 6325.2050559646. The cubic root of 40008219 is about 342.0186115517.

The spelling of 40008219 in words is "forty million, eight thousand, two hundred nineteen".