139912 has 8 divisors (see below), whose sum is σ = 262350. Its totient is φ = 69952.

The previous prime is 139907. The next prime is 139921. The reversal of 139912 is 219931.

It can be written as a sum of positive squares in only one way, i.e., 139876 + 36 = 374^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an unprimeable number.

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, 8737 + ... + 8752.

2¹³⁹⁹¹² is an apocalyptic number.

It is an amenable number.

139912 is a deficient number, since it is larger than the sum of its proper divisors (122438).

139912 is a wasteful number, since it uses less digits than its factorization.

139912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17495 (or 17491 counting only the distinct ones).

The product of its digits is 486, while the sum is 25.

The square root of 139912 is about 374.0481252459. The cubic root of 139912 is about 51.9140592267.

The spelling of 139912 in words is "one hundred thirty-nine thousand, nine hundred twelve".