38985915 has 16 divisors (see below), whose sum is σ = 62496000. Its totient is φ = 20752992.

The previous prime is 38985911. The next prime is 38985917. The reversal of 38985915 is 51958983.

38985915 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 38985915 - 2² = 38985911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38985911) 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 15 ways as a sum of consecutive naturals, for example, 6816 + ... + 11154.

It is an arithmetic number, because the mean of its divisors is an integer number (3906000).

Almost surely, 2^38985915 is an apocalyptic number.

38985915 is a deficient number, since it is larger than the sum of its proper divisors (23510085).

38985915 is a wasteful number, since it uses less digits than its factorization.

38985915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946.

The product of its digits is 388800, while the sum is 48.

The square root of 38985915 is about 6243.8701940383. The cubic root of 38985915 is about 339.0803144172.

The spelling of 38985915 in words is "thirty-eight million, nine hundred eighty-five thousand, nine hundred fifteen".