139943585 has 16 divisors (see below), whose sum is σ = 171694080. Its totient is φ = 109462080.

The previous prime is 139943567. The next prime is 139943591. The reversal of 139943585 is 585349931.

139943585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139943585 - 2⁶ = 139943521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94400 + ... + 95870.

It is an arithmetic number, because the mean of its divisors is an integer number (10730880).

Almost surely, 2^139943585 is an apocalyptic number.

It is an amenable number.

139943585 is a deficient number, since it is larger than the sum of its proper divisors (31750495).

139943585 is a wasteful number, since it uses less digits than its factorization.

139943585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888.

The product of its digits is 583200, while the sum is 47.

The square root of 139943585 is about 11829.7753571232. The cubic root of 139943585 is about 519.1796544920.

The spelling of 139943585 in words is "one hundred thirty-nine million, nine hundred forty-three thousand, five hundred eighty-five".