38999755 has 4 divisors (see below), whose sum is σ = 46799712. Its totient is φ = 31199800.

The previous prime is 38999731. The next prime is 38999771. The reversal of 38999755 is 55799983.

38999755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55799983 = 1721 ⋅32423.

It is not a de Polignac number, because 38999755 - 2¹⁹ = 38475467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38999696 and 38999705.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3899971 + ... + 3899980.

It is an arithmetic number, because the mean of its divisors is an integer number (11699928).

Almost surely, 2^38999755 is an apocalyptic number.

38999755 is a deficient number, since it is larger than the sum of its proper divisors (7799957).

38999755 is an equidigital number, since it uses as much as digits as its factorization.

38999755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799956.

The product of its digits is 3061800, while the sum is 55.

The square root of 38999755 is about 6244.9783826688. The cubic root of 38999755 is about 339.1204341745.

The spelling of 38999755 in words is "thirty-eight million, nine hundred ninety-nine thousand, seven hundred fifty-five".