38809219 has 2 divisors, whose sum is σ = 38809220. Its totient is φ = 38809218.

The previous prime is 38809201. The next prime is 38809259. The reversal of 38809219 is 91290883.

It is an a-pointer prime, because the next prime (38809259) can be obtained adding 38809219 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38809219 - 2⁵ = 38809187 is a prime.

It is a super-2 number, since 2×38809219² = 3012310958779922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38809259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19404609 + 19404610.

It is an arithmetic number, because the mean of its divisors is an integer number (19404610).

Almost surely, 2^38809219 is an apocalyptic number.

38809219 is a deficient number, since it is larger than the sum of its proper divisors (1).

38809219 is an equidigital number, since it uses as much as digits as its factorization.

38809219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 38809219 is about 6229.7045676340. The cubic root of 38809219 is about 338.5672669043.

The spelling of 38809219 in words is "thirty-eight million, eight hundred nine thousand, two hundred nineteen".