38959985 has 8 divisors (see below), whose sum is σ = 46801320. Its totient is φ = 31135104.

The previous prime is 38959981. The next prime is 38960003. The reversal of 38959985 is 58995983.

It can be written as a sum of positive squares in 4 ways, for example, as 16982641 + 21977344 = 4121^2 + 4688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38959985 - 2² = 38959981 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38959985.

It is not an unprimeable number, because it can be changed into a prime (38959981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (5850165).

Almost surely, 2^38959985 is an apocalyptic number.

It is an amenable number.

38959985 is a deficient number, since it is larger than the sum of its proper divisors (7841335).

38959985 is a wasteful number, since it uses less digits than its factorization.

38959985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227.

The product of its digits is 3499200, while the sum is 56.

The square root of 38959985 is about 6241.7934121533. The cubic root of 38959985 is about 339.0051222820.

The spelling of 38959985 in words is "thirty-eight million, nine hundred fifty-nine thousand, nine hundred eighty-five".