38656649 has 2 divisors, whose sum is σ = 38656650. Its totient is φ = 38656648.

The previous prime is 38656643. The next prime is 38656687. The reversal of 38656649 is 94665683.

38656649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36820624 + 1836025 = 6068^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 38656649 - 2⁴ = 38656633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38656643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19328324 + 19328325.

It is an arithmetic number, because the mean of its divisors is an integer number (19328325).

Almost surely, 2^38656649 is an apocalyptic number.

It is an amenable number.

38656649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38656649 is an equidigital number, since it uses as much as digits as its factorization.

38656649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The square root of 38656649 is about 6217.4471449301. The cubic root of 38656649 is about 338.1230163896.

The spelling of 38656649 in words is "thirty-eight million, six hundred fifty-six thousand, six hundred forty-nine".