139368565 has 8 divisors (see below), whose sum is σ = 191134080. Its totient is φ = 95566992.

The previous prime is 139368563. The next prime is 139368623. The reversal of 139368565 is 565863931.

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 139368565 - 2¹ = 139368563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139368563) 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, 1990945 + ... + 1991014.

It is an arithmetic number, because the mean of its divisors is an integer number (23891760).

Almost surely, 2^139368565 is an apocalyptic number.

It is an amenable number.

139368565 is a deficient number, since it is larger than the sum of its proper divisors (51765515).

139368565 is an equidigital number, since it uses as much as digits as its factorization.

139368565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981971.

The product of its digits is 583200, while the sum is 46.

The square root of 139368565 is about 11805.4464125674. The cubic root of 139368565 is about 518.4675853785.

The spelling of 139368565 in words is "one hundred thirty-nine million, three hundred sixty-eight thousand, five hundred sixty-five".