139984585 has 16 divisors (see below), whose sum is σ = 181407744. Its totient is φ = 103084992.

The previous prime is 139984583. The next prime is 139984589. The reversal of 139984585 is 585489931.

It is a cyclic number.

It is not a de Polignac number, because 139984585 - 2¹ = 139984583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139984583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22084 + ... + 27706.

It is an arithmetic number, because the mean of its divisors is an integer number (11337984).

Almost surely, 2^139984585 is an apocalyptic number.

It is an amenable number.

139984585 is a deficient number, since it is larger than the sum of its proper divisors (41423159).

139984585 is a wasteful number, since it uses less digits than its factorization.

139984585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6024.

The product of its digits is 1555200, while the sum is 52.

The square root of 139984585 is about 11831.5081456254. The cubic root of 139984585 is about 519.2303517959.

The spelling of 139984585 in words is "one hundred thirty-nine million, nine hundred eighty-four thousand, five hundred eighty-five".