39118881 has 8 divisors (see below), whose sum is σ = 52424064. Its totient is φ = 25946480.

The previous prime is 39118867. The next prime is 39118889. The reversal of 39118881 is 18881193.

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 39118881 - 2¹³ = 39110689 is a prime.

It is a super-2 number, since 2×39118881² = 3060573701384322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39118889) 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, 32505 + ... + 33686.

It is an arithmetic number, because the mean of its divisors is an integer number (6553008).

Almost surely, 2^39118881 is an apocalyptic number.

It is an amenable number.

39118881 is a deficient number, since it is larger than the sum of its proper divisors (13305183).

39118881 is a wasteful number, since it uses less digits than its factorization.

39118881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66391.

The product of its digits is 13824, while the sum is 39.

The square root of 39118881 is about 6254.5088536191. The cubic root of 39118881 is about 339.4653679491.

The spelling of 39118881 in words is "thirty-nine million, one hundred eighteen thousand, eight hundred eighty-one".