38865789 has 12 divisors (see below), whose sum is σ = 56247516. Its totient is φ = 25860672.

The previous prime is 38865787. The next prime is 38865793. The reversal of 38865789 is 98756883.

It is a happy number.

38865789 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 23912100 + 14953689 = 4890^2 + 3867^2 .

It is not a de Polignac number, because 38865789 - 2¹ = 38865787 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38865787) 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, 1137 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (4687293).

Almost surely, 2^38865789 is an apocalyptic number.

It is an amenable number.

38865789 is a deficient number, since it is larger than the sum of its proper divisors (17381727).

38865789 is a wasteful number, since it uses less digits than its factorization.

38865789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8316 (or 8313 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 38865789 is about 6234.2432580065. The cubic root of 38865789 is about 338.7316904815.

The spelling of 38865789 in words is "thirty-eight million, eight hundred sixty-five thousand, seven hundred eighty-nine".