139728365 has 16 divisors (see below), whose sum is σ = 191972352. Its totient is φ = 95641344.

The previous prime is 139728359. The next prime is 139728367. The reversal of 139728365 is 563827931.

It is a cyclic number.

It is not a de Polignac number, because 139728365 - 2⁶ = 139728301 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 (139728367) 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 15 ways as a sum of consecutive naturals, for example, 17957 + ... + 24533.

It is an arithmetic number, because the mean of its divisors is an integer number (11998272).

Almost surely, 2^139728365 is an apocalyptic number.

It is an amenable number.

139728365 is a deficient number, since it is larger than the sum of its proper divisors (52243987).

139728365 is an equidigital number, since it uses as much as digits as its factorization.

139728365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196.

The product of its digits is 272160, while the sum is 44.

The square root of 139728365 is about 11820.6753191178. The cubic root of 139728365 is about 518.9133682001.

The spelling of 139728365 in words is "one hundred thirty-nine million, seven hundred twenty-eight thousand, three hundred sixty-five".