139085527 has 4 divisors (see below), whose sum is σ = 158954896. Its totient is φ = 119216160.

The previous prime is 139085497. The next prime is 139085539. The reversal of 139085527 is 725580931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 725580931 = 23 ⋅31546997.

It is not a de Polignac number, because 139085527 - 2⁷ = 139085399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139085527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139085587) 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 3 ways as a sum of consecutive naturals, for example, 9934674 + ... + 9934687.

It is an arithmetic number, because the mean of its divisors is an integer number (39738724).

Almost surely, 2^139085527 is an apocalyptic number.

139085527 is a deficient number, since it is larger than the sum of its proper divisors (19869369).

139085527 is an equidigital number, since it uses as much as digits as its factorization.

139085527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869368.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 139085527 is about 11793.4527175039. The cubic root of 139085527 is about 518.1163692085.

The spelling of 139085527 in words is "one hundred thirty-nine million, eighty-five thousand, five hundred twenty-seven".