139019144 has 32 divisors (see below), whose sum is σ = 287971200. Its totient is φ = 62387520.

The previous prime is 139019141. The next prime is 139019161. The reversal of 139019144 is 441910931.

It is a self number, because there is not a number n which added to its sum of digits gives 139019144.

It is not an unprimeable number, because it can be changed into a prime (139019141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3047 + ... + 16950.

It is an arithmetic number, because the mean of its divisors is an integer number (8999100).

Almost surely, 2^139019144 is an apocalyptic number.

It is an amenable number.

139019144 is an abundant number, since it is smaller than the sum of its proper divisors (148952056).

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

139019144 is a wasteful number, since it uses less digits than its factorization.

139019144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20093 (or 20089 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 139019144 is about 11790.6379810424. The cubic root of 139019144 is about 518.0339269083.

The spelling of 139019144 in words is "one hundred thirty-nine million, nineteen thousand, one hundred forty-four".