40165219 has 2 divisors, whose sum is σ = 40165220. Its totient is φ = 40165218.

The previous prime is 40165217. The next prime is 40165231. The reversal of 40165219 is 91256104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40165219 - 2¹ = 40165217 is a prime.

It is a super-2 number, since 2×40165219² = 3226489634635922, which contains 22 as substring.

Together with 40165217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40165217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20082609 + 20082610.

It is an arithmetic number, because the mean of its divisors is an integer number (20082610).

Almost surely, 2^40165219 is an apocalyptic number.

40165219 is a deficient number, since it is larger than the sum of its proper divisors (1).

40165219 is an equidigital number, since it uses as much as digits as its factorization.

40165219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 40165219 is about 6337.6035691734. The cubic root of 40165219 is about 342.4654100433.

The spelling of 40165219 in words is "forty million, one hundred sixty-five thousand, two hundred nineteen".