39487918 has 8 divisors (see below), whose sum is σ = 61807248. Its totient is φ = 18885504.

The previous prime is 39487897. The next prime is 39487919. The reversal of 39487918 is 81978493.

It is a happy number.

39487918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39487919) 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 3 ways as a sum of consecutive naturals, for example, 429171 + ... + 429262.

It is an arithmetic number, because the mean of its divisors is an integer number (7725906).

Almost surely, 2^39487918 is an apocalyptic number.

39487918 is a deficient number, since it is larger than the sum of its proper divisors (22319330).

39487918 is a wasteful number, since it uses less digits than its factorization.

39487918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858458.

The product of its digits is 435456, while the sum is 49.

The square root of 39487918 is about 6283.9412791655. The cubic root of 39487918 is about 340.5295036619.

The spelling of 39487918 in words is "thirty-nine million, four hundred eighty-seven thousand, nine hundred eighteen".