38979985 has 16 divisors (see below), whose sum is σ = 51166080. Its totient is φ = 28272640.

The previous prime is 38979977. The next prime is 38980003. The reversal of 38979985 is 58997983.

It is not a de Polignac number, because 38979985 - 2³ = 38979977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26961 + ... + 28369.

It is an arithmetic number, because the mean of its divisors is an integer number (3197880).

Almost surely, 2^38979985 is an apocalyptic number.

It is an amenable number.

38979985 is a deficient number, since it is larger than the sum of its proper divisors (12186095).

38979985 is a wasteful number, since it uses less digits than its factorization.

38979985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its digits is 4898880, while the sum is 58.

The square root of 38979985 is about 6243.3953102459. The cubic root of 38979985 is about 339.0631214710.

The spelling of 38979985 in words is "thirty-eight million, nine hundred seventy-nine thousand, nine hundred eighty-five".