139089 has 8 divisors (see below), whose sum is σ = 188352. Its totient is φ = 91280.

The previous prime is 139079. The next prime is 139091. The reversal of 139089 is 980931.

It is a happy number.

139089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 139089 - 2⁹ = 138577 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (139079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114 + ... + 539.

It is an arithmetic number, because the mean of its divisors is an integer number (23544).

2¹³⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

139089 is a deficient number, since it is larger than the sum of its proper divisors (49263).

139089 is an equidigital number, since it uses as much as digits as its factorization.

139089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 139089 is about 372.9463768426. The cubic root of 139089 is about 51.8120681671.

The spelling of 139089 in words is "one hundred thirty-nine thousand, eighty-nine".