38775905 has 12 divisors (see below), whose sum is σ = 54128340. Its totient is φ = 26589024.

The previous prime is 38775901. The next prime is 38775911. The reversal of 38775905 is 50957783.

It is a happy number.

38775905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15311569 + 23464336 = 3913^2 + 4844^2 .

It is not a de Polignac number, because 38775905 - 2² = 38775901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38775901) 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 in 11 ways as a sum of consecutive naturals, for example, 78890 + ... + 79379.

It is an arithmetic number, because the mean of its divisors is an integer number (4510695).

Almost surely, 2^38775905 is an apocalyptic number.

38775905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38775905 is a deficient number, since it is larger than the sum of its proper divisors (15352435).

38775905 is a wasteful number, since it uses less digits than its factorization.

38775905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158288 (or 158281 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 38775905 is about 6227.0301910301. The cubic root of 38775905 is about 338.4703633069.

The spelling of 38775905 in words is "thirty-eight million, seven hundred seventy-five thousand, nine hundred five".