139996 has 12 divisors (see below), whose sum is σ = 253120. Its totient is φ = 67680.

The previous prime is 139991. The next prime is 139999. The reversal of 139996 is 699931.

139996 = T₃₀₄ + T₃₀₅ + T₃₀₆.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441 + ... + 688.

2¹³⁹⁹⁹⁶ is an apocalyptic number.

139996 is the 306-th centered triangular number.

It is an amenable number.

139996 is a deficient number, since it is larger than the sum of its proper divisors (113124).

139996 is a wasteful number, since it uses less digits than its factorization.

139996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164 (or 1162 counting only the distinct ones).

The product of its digits is 13122, while the sum is 37.

The square root of 139996 is about 374.1603934144. The cubic root of 139996 is about 51.9244464906.

The spelling of 139996 in words is "one hundred thirty-nine thousand, nine hundred ninety-six".