139860 has 96 divisors (see below), whose sum is σ = 510720. Its totient is φ = 31104.

The previous prime is 139837. The next prime is 139861. The reversal of 139860 is 68931.

139860 is nontrivially palindromic in base 8.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3762 + ... + 3798.

It is an arithmetic number, because the mean of its divisors is an integer number (5320).

2¹³⁹⁸⁶⁰ is an apocalyptic number.

139860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255360).

139860 is an abundant number, since it is smaller than the sum of its proper divisors (370860).

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

139860 is a wasteful number, since it uses less digits than its factorization.

139860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139860 is about 373.9786090139. The cubic root of 139860 is about 51.9076269322.

It can be divided in two parts, 139 and 860, that added together give a palindrome (999).

The spelling of 139860 in words is "one hundred thirty-nine thousand, eight hundred sixty".