40078219 has 2 divisors, whose sum is σ = 40078220. Its totient is φ = 40078218.

The previous prime is 40078147. The next prime is 40078223. The reversal of 40078219 is 91287004.

40078219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40078219 - 2⁷ = 40078091 is a prime.

It is a super-2 number, since 2×40078219² = 3212527276423922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40078249) 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 as a sum of consecutive naturals, namely, 20039109 + 20039110.

It is an arithmetic number, because the mean of its divisors is an integer number (20039110).

Almost surely, 2^40078219 is an apocalyptic number.

40078219 is a deficient number, since it is larger than the sum of its proper divisors (1).

40078219 is an equidigital number, since it uses as much as digits as its factorization.

40078219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40078219 is about 6330.7360551519. The cubic root of 40078219 is about 342.2179652018.

The spelling of 40078219 in words is "forty million, seventy-eight thousand, two hundred nineteen".