38905585 has 4 divisors (see below), whose sum is σ = 46686708. Its totient is φ = 31124464.

The previous prime is 38905577. The next prime is 38905609. The reversal of 38905585 is 58550983.

It is a happy number.

38905585 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: 58550983 = 37 ⋅1582459.

It can be written as a sum of positive squares in 2 ways, for example, as 29517489 + 9388096 = 5433^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 38905585 - 2³ = 38905577 is a prime.

It is a Duffinian number.

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, 3890554 + ... + 3890563.

It is an arithmetic number, because the mean of its divisors is an integer number (11671677).

Almost surely, 2^38905585 is an apocalyptic number.

It is an amenable number.

38905585 is a deficient number, since it is larger than the sum of its proper divisors (7781123).

38905585 is an equidigital number, since it uses as much as digits as its factorization.

38905585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781122.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 38905585 is about 6237.4341679893. The cubic root of 38905585 is about 338.8472640008.

The spelling of 38905585 in words is "thirty-eight million, nine hundred five thousand, five hundred eighty-five".