139028593 has 8 divisors (see below), whose sum is σ = 154529856. Its totient is φ = 124004400.

The previous prime is 139028563. The next prime is 139028599. The reversal of 139028593 is 395820931.

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

It is a cyclic number.

It is not a de Polignac number, because 139028593 - 2²¹ = 136931441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139028599) 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 7 ways as a sum of consecutive naturals, for example, 118653 + ... + 119818.

It is an arithmetic number, because the mean of its divisors is an integer number (19316232).

Almost surely, 2^139028593 is an apocalyptic number.

It is an amenable number.

139028593 is a deficient number, since it is larger than the sum of its proper divisors (15501263).

139028593 is a wasteful number, since it uses less digits than its factorization.

139028593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238535.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 139028593 is about 11791.0386735012. The cubic root of 139028593 is about 518.0456634014.

The spelling of 139028593 in words is "one hundred thirty-nine million, twenty-eight thousand, five hundred ninety-three".