40670219 has 2 divisors, whose sum is σ = 40670220. Its totient is φ = 40670218.

The previous prime is 40670207. The next prime is 40670221. The reversal of 40670219 is 91207604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40670219 - 2⁸ = 40669963 is a prime.

It is a super-2 number, since 2×40670219² = 3308133427015922, which contains 22 as substring.

Together with 40670221, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40670191 and 40670200.

It is not a weakly prime, because it can be changed into another prime (40670269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20335109 + 20335110.

It is an arithmetic number, because the mean of its divisors is an integer number (20335110).

Almost surely, 2^40670219 is an apocalyptic number.

40670219 is a deficient number, since it is larger than the sum of its proper divisors (1).

40670219 is an equidigital number, since it uses as much as digits as its factorization.

40670219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 40670219 is about 6377.3206756443. The cubic root of 40670219 is about 343.8947166314.

The spelling of 40670219 in words is "forty million, six hundred seventy thousand, two hundred nineteen".