38993755 has 4 divisors (see below), whose sum is σ = 46792512. Its totient is φ = 31195000.

The previous prime is 38993741. The next prime is 38993761. The reversal of 38993755 is 55739983.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38993755 - 2⁵ = 38993723 is a prime.

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 Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38993699 and 38993708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899371 + ... + 3899380.

It is an arithmetic number, because the mean of its divisors is an integer number (11698128).

Almost surely, 2^38993755 is an apocalyptic number.

38993755 is a deficient number, since it is larger than the sum of its proper divisors (7798757).

38993755 is an equidigital number, since it uses as much as digits as its factorization.

38993755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798756.

The product of its digits is 1020600, while the sum is 49.

The square root of 38993755 is about 6244.4979782205. The cubic root of 38993755 is about 339.1030423818.

The spelling of 38993755 in words is "thirty-eight million, nine hundred ninety-three thousand, seven hundred fifty-five".