139573 has 8 divisors (see below), whose sum is σ = 161792. Its totient is φ = 117936.

The previous prime is 139571. The next prime is 139589. The reversal of 139573 is 375931.

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

It is not a de Polignac number, because 139573 - 2¹ = 139571 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 (139571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 967.

It is an arithmetic number, because the mean of its divisors is an integer number (20224).

2¹³⁹⁵⁷³ is an apocalyptic number.

It is an amenable number.

139573 is a deficient number, since it is larger than the sum of its proper divisors (22219).

139573 is a wasteful number, since it uses less digits than its factorization.

139573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its digits is 2835, while the sum is 28.

The square root of 139573 is about 373.5947001765. The cubic root of 139573 is about 51.8720969005.

The spelling of 139573 in words is "one hundred thirty-nine thousand, five hundred seventy-three".