139588 has 6 divisors (see below), whose sum is σ = 244286. Its totient is φ = 69792.

The previous prime is 139571. The next prime is 139589. The reversal of 139588 is 885931.

It can be written as a sum of positive squares in only one way, i.e., 82944 + 56644 = 288^2 + 238^2 .

It is not an unprimeable number, because it can be changed into a prime (139589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17445 + ... + 17452.

2¹³⁹⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

139588 is a deficient number, since it is larger than the sum of its proper divisors (104698).

139588 is a wasteful number, since it uses less digits than its factorization.

139588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34901 (or 34899 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 139588 is about 373.6147748684. The cubic root of 139588 is about 51.8739550765.

It can be divided in two parts, 1395 and 88, that multiplied together give a triangular number (122760 = T₄₉₅).

The spelling of 139588 in words is "one hundred thirty-nine thousand, five hundred eighty-eight".