38539999 has 6 divisors (see below), whose sum is σ = 40675560. Its totient is φ = 36511236.

The previous prime is 38539981. The next prime is 38540023. The reversal of 38539999 is 99993583.

38539999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38539999 - 2⁵ = 38539967 is a prime.

It is a Duffinian number.

38539999 is a modest number, since divided by 9999 gives 3853 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38539939) 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 5 ways as a sum of consecutive naturals, for example, 53019 + ... + 53740.

It is an arithmetic number, because the mean of its divisors is an integer number (6779260).

Almost surely, 2^38539999 is an apocalyptic number.

38539999 is a deficient number, since it is larger than the sum of its proper divisors (2135561).

38539999 is a wasteful number, since it uses less digits than its factorization.

38539999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106797 (or 106778 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 55.

The square root of 38539999 is about 6208.0591975270. The cubic root of 38539999 is about 337.7825679298.

The spelling of 38539999 in words is "thirty-eight million, five hundred thirty-nine thousand, nine hundred ninety-nine".