38670449 has 2 divisors, whose sum is σ = 38670450. Its totient is φ = 38670448.

The previous prime is 38670431. The next prime is 38670451. The reversal of 38670449 is 94407683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21298225 + 17372224 = 4615^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 38670449 - 2²⁰ = 37621873 is a prime.

Together with 38670451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38670409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19335224 + 19335225.

It is an arithmetic number, because the mean of its divisors is an integer number (19335225).

Almost surely, 2^38670449 is an apocalyptic number.

It is an amenable number.

38670449 is a deficient number, since it is larger than the sum of its proper divisors (1).

38670449 is an equidigital number, since it uses as much as digits as its factorization.

38670449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 38670449 is about 6218.5568261454. The cubic root of 38670449 is about 338.1632470063.

The spelling of 38670449 in words is "thirty-eight million, six hundred seventy thousand, four hundred forty-nine".