139568039 has 8 divisors (see below), whose sum is σ = 155487360. Its totient is φ = 124389216.

The previous prime is 139568029. The next prime is 139568057. The reversal of 139568039 is 930865931.

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 139568039 - 2¹² = 139563943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139568029) 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, 184727 + ... + 185480.

It is an arithmetic number, because the mean of its divisors is an integer number (19435920).

Almost surely, 2^139568039 is an apocalyptic number.

139568039 is a deficient number, since it is larger than the sum of its proper divisors (15919321).

139568039 is a wasteful number, since it uses less digits than its factorization.

139568039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370249.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 139568039 is about 11813.8917804422. The cubic root of 139568039 is about 518.7148231046.

The spelling of 139568039 in words is "one hundred thirty-nine million, five hundred sixty-eight thousand, thirty-nine".