38665855 has 16 divisors (see below), whose sum is σ = 49021920. Its totient is φ = 29196288.

The previous prime is 38665853. The next prime is 38665859. The reversal of 38665855 is 55856683.

It is a cyclic number.

It is not a de Polignac number, because 38665855 - 2¹ = 38665853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38665853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32959 + ... + 34111.

It is an arithmetic number, because the mean of its divisors is an integer number (3063870).

Almost surely, 2^38665855 is an apocalyptic number.

38665855 is a deficient number, since it is larger than the sum of its proper divisors (10356065).

38665855 is a wasteful number, since it uses less digits than its factorization.

38665855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530.

The product of its digits is 864000, while the sum is 46.

The square root of 38665855 is about 6218.1874368661. The cubic root of 38665855 is about 338.1498553552.

The spelling of 38665855 in words is "thirty-eight million, six hundred sixty-five thousand, eight hundred fifty-five".