38668779 has 8 divisors (see below), whose sum is σ = 57287120. Its totient is φ = 25779168.

The previous prime is 38668771. The next prime is 38668783. The reversal of 38668779 is 97786683.

38668779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38668779 - 2³ = 38668771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38668771) 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 7 ways as a sum of consecutive naturals, for example, 716062 + ... + 716115.

It is an arithmetic number, because the mean of its divisors is an integer number (7160890).

Almost surely, 2^38668779 is an apocalyptic number.

38668779 is a deficient number, since it is larger than the sum of its proper divisors (18618341).

38668779 is a wasteful number, since it uses less digits than its factorization.

38668779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432186 (or 1432180 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 38668779 is about 6218.4225491679. The cubic root of 38668779 is about 338.1583790277.

The spelling of 38668779 in words is "thirty-eight million, six hundred sixty-eight thousand, seven hundred seventy-nine".