139960 has 16 divisors (see below), whose sum is σ = 315000. Its totient is φ = 55968.

The previous prime is 139943. The next prime is 139967. The reversal of 139960 is 69931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1710 + ... + 1789.

2¹³⁹⁹⁶⁰ is an apocalyptic number.

139960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139960 is an abundant number, since it is smaller than the sum of its proper divisors (175040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139960 is a wasteful number, since it uses less digits than its factorization.

139960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 139960 is about 374.1122826104. The cubic root of 139960 is about 51.9199953150.

The spelling of 139960 in words is "one hundred thirty-nine thousand, nine hundred sixty".