38783938 has 4 divisors (see below), whose sum is σ = 58175910. Its totient is φ = 19391968.

The previous prime is 38783923. The next prime is 38783939. The reversal of 38783938 is 83938783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83938783 = 6373 ⋅13171.

It can be written as a sum of positive squares in only one way, i.e., 35200489 + 3583449 = 5933^2 + 1893^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 38783891 and 38783900.

It is not an unprimeable number, because it can be changed into a prime (38783939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9695983 + ... + 9695986.

Almost surely, 2^38783938 is an apocalyptic number.

38783938 is a deficient number, since it is larger than the sum of its proper divisors (19391972).

38783938 is a wasteful number, since it uses less digits than its factorization.

38783938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19391971.

The product of its digits is 870912, while the sum is 49.

The square root of 38783938 is about 6227.6751681506. The cubic root of 38783938 is about 338.4937347339.

The spelling of 38783938 in words is "thirty-eight million, seven hundred eighty-three thousand, nine hundred thirty-eight".