139049 has 4 divisors (see below), whose sum is σ = 139920. Its totient is φ = 138180.

The previous prime is 139033. The next prime is 139067. The reversal of 139049 is 940931.

It is a happy number.

139049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 139049 - 2⁴ = 139033 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 119 + ... + 540.

It is an arithmetic number, because the mean of its divisors is an integer number (34980).

2¹³⁹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

139049 is a deficient number, since it is larger than the sum of its proper divisors (871).

139049 is an equidigital number, since it uses as much as digits as its factorization.

139049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 139049 is about 372.8927459740. The cubic root of 139049 is about 51.8071008885.

The spelling of 139049 in words is "one hundred thirty-nine thousand, forty-nine".