139432 has 16 divisors (see below), whose sum is σ = 270900. Its totient is φ = 67200.

The previous prime is 139429. The next prime is 139439. The reversal of 139432 is 234931.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 5476 = 366^2 + 74^2 .

It is not an unprimeable number, because it can be changed into a prime (139439) 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 in 3 ways as a sum of consecutive naturals, for example, 69 + ... + 532.

2¹³⁹⁴³² is an apocalyptic number.

It is an amenable number.

139432 is a deficient number, since it is larger than the sum of its proper divisors (131468).

139432 is a wasteful number, since it uses less digits than its factorization.

139432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 632 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 139432 is about 373.4059453196. The cubic root of 139432 is about 51.8546235354.

The spelling of 139432 in words is "one hundred thirty-nine thousand, four hundred thirty-two".