139308485 has 8 divisors (see below), whose sum is σ = 167473656. Its totient is φ = 111244480.

The previous prime is 139308473. The next prime is 139308487. The reversal of 139308485 is 584803931.

139308485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4330561 + 134977924 = 2081^2 + 11618^2 .

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

It is not a de Polignac number, because 139308485 - 2⁴ = 139308469 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 (139308487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22226 + ... + 27795.

It is an arithmetic number, because the mean of its divisors is an integer number (20934207).

Almost surely, 2^139308485 is an apocalyptic number.

It is an amenable number.

139308485 is a deficient number, since it is larger than the sum of its proper divisors (28165171).

139308485 is an equidigital number, since it uses as much as digits as its factorization.

139308485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50583.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 139308485 is about 11802.9015500427. The cubic root of 139308485 is about 518.3930730960.

The spelling of 139308485 in words is "one hundred thirty-nine million, three hundred eight thousand, four hundred eighty-five".