38966905 has 8 divisors (see below), whose sum is σ = 46816200. Its totient is φ = 31136256.

The previous prime is 38966903. The next prime is 38966951. The reversal of 38966905 is 50966983.

38966905 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 4 ways, for example, as 1610361 + 37356544 = 1269^2 + 6112^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38966905 - 2¹ = 38966903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38966903) 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, 451 + ... + 8839.

It is an arithmetic number, because the mean of its divisors is an integer number (5852025).

Almost surely, 2^38966905 is an apocalyptic number.

It is an amenable number.

38966905 is a deficient number, since it is larger than the sum of its proper divisors (7849295).

38966905 is an equidigital number, since it uses as much as digits as its factorization.

38966905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 38966905 is about 6242.3477154032. The cubic root of 38966905 is about 339.0251922467.

It can be divided in two parts, 3896 and 6905, that added together give a palindrome (10801).

The spelling of 38966905 in words is "thirty-eight million, nine hundred sixty-six thousand, nine hundred five".