38449109 has 2 divisors, whose sum is σ = 38449110. Its totient is φ = 38449108.

The previous prime is 38449097. The next prime is 38449129. The reversal of 38449109 is 90194483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37478884 + 970225 = 6122^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 38449109 - 2²⁰ = 37400533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38449129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19224554 + 19224555.

It is an arithmetic number, because the mean of its divisors is an integer number (19224555).

Almost surely, 2^38449109 is an apocalyptic number.

It is an amenable number.

38449109 is a deficient number, since it is larger than the sum of its proper divisors (1).

38449109 is an equidigital number, since it uses as much as digits as its factorization.

38449109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 38449109 is about 6200.7345532606. The cubic root of 38449109 is about 337.5168247671.

The spelling of 38449109 in words is "thirty-eight million, four hundred forty-nine thousand, one hundred nine".