139085265 has 24 divisors (see below), whose sum is σ = 244609344. Its totient is φ = 67434400.

The previous prime is 139085249. The next prime is 139085269. The reversal of 139085265 is 562580931.

It is not a de Polignac number, because 139085265 - 2⁴ = 139085249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139085269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36501 + ... + 40130.

It is an arithmetic number, because the mean of its divisors is an integer number (10192056).

Almost surely, 2^139085265 is an apocalyptic number.

139085265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139085265 is a deficient number, since it is larger than the sum of its proper divisors (105524079).

139085265 is a wasteful number, since it uses less digits than its factorization.

139085265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76661 (or 76650 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 139085265 is about 11793.4416096405. The cubic root of 139085265 is about 518.1160438773.

The spelling of 139085265 in words is "one hundred thirty-nine million, eighty-five thousand, two hundred sixty-five".