139958 has 16 divisors (see below), whose sum is σ = 258720. Its totient is φ = 55296.

The previous prime is 139943. The next prime is 139967. The reversal of 139958 is 859931.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (16170).

2¹³⁹⁹⁵⁸ is an apocalyptic number.

139958 is a deficient number, since it is larger than the sum of its proper divisors (118762).

139958 is a wasteful number, since it uses less digits than its factorization.

139958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its digits is 9720, while the sum is 35.

The square root of 139958 is about 374.1096096066. The cubic root of 139958 is about 51.9197480051.

The spelling of 139958 in words is "one hundred thirty-nine thousand, nine hundred fifty-eight".