139105344 has 224 divisors, whose sum is σ = 450616320. Its totient is φ = 37029888.

The previous prime is 139105331. The next prime is 139105349. The reversal of 139105344 is 443501931.

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (139105349) 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, 1675927 + ... + 1676009.

It is an arithmetic number, because the mean of its divisors is an integer number (2011680).

Almost surely, 2^139105344 is an apocalyptic number.

139105344 is a gapful number since it is divisible by the number (14) 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 139105344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225308160).

139105344 is an abundant number, since it is smaller than the sum of its proper divisors (311510976).

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

139105344 is a wasteful number, since it uses less digits than its factorization.

139105344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 139105344 is about 11794.2928571407. The cubic root of 139105344 is about 518.1409752302.

The spelling of 139105344 in words is "one hundred thirty-nine million, one hundred five thousand, three hundred forty-four".