139888144 has 40 divisors (see below), whose sum is σ = 299445120. Its totient is φ = 62774400.

The previous prime is 139888129. The next prime is 139888169. The reversal of 139888144 is 441888931.

It is a junction number, because it is equal to n+sod(n) for n = 139888094 and 139888103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8874 + ... + 18934.

It is an arithmetic number, because the mean of its divisors is an integer number (7486128).

Almost surely, 2^139888144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139888144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149722560).

139888144 is an abundant number, since it is smaller than the sum of its proper divisors (159556976).

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

139888144 is a wasteful number, since it uses less digits than its factorization.

139888144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10159 (or 10153 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 139888144 is about 11827.4318429657. The cubic root of 139888144 is about 519.1110848582. Note that the first 3 decimals are identical.

The spelling of 139888144 in words is "one hundred thirty-nine million, eight hundred eighty-eight thousand, one hundred forty-four".