139093 has 4 divisors (see below), whose sum is σ = 139840. Its totient is φ = 138348.

The previous prime is 139091. The next prime is 139109. The reversal of 139093 is 390931.

139093 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 139093 - 2¹ = 139091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178 + ... + 556.

It is an arithmetic number, because the mean of its divisors is an integer number (34960).

2¹³⁹⁰⁹³ is an apocalyptic number.

It is an amenable number.

139093 is a deficient number, since it is larger than the sum of its proper divisors (747).

139093 is an equidigital number, since it uses as much as digits as its factorization.

139093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 139093 is about 372.9517395053. The cubic root of 139093 is about 51.8125648425.

The spelling of 139093 in words is "one hundred thirty-nine thousand, ninety-three".