39139719 has 8 divisors (see below), whose sum is σ = 52224240. Its totient is φ = 26074176.

The previous prime is 39139687. The next prime is 39139733. The reversal of 39139719 is 91793193.

39139719 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 not a de Polignac number, because 39139719 - 2⁵ = 39139687 is a prime.

It is a super-2 number, since 2×39139719² = 3063835206797922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39139739) 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 7 ways as a sum of consecutive naturals, for example, 1099 + ... + 8915.

It is an arithmetic number, because the mean of its divisors is an integer number (6528030).

Almost surely, 2^39139719 is an apocalyptic number.

39139719 is a deficient number, since it is larger than the sum of its proper divisors (13084521).

39139719 is a wasteful number, since it uses less digits than its factorization.

39139719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489.

The product of its digits is 45927, while the sum is 42.

The square root of 39139719 is about 6256.1744700735. The cubic root of 39139719 is about 339.5256331672.

The spelling of 39139719 in words is "thirty-nine million, one hundred thirty-nine thousand, seven hundred nineteen".