139705344 has 176 divisors, whose sum is σ = 429706240. Its totient is φ = 44789760.

The previous prime is 139705331. The next prime is 139705361. The reversal of 139705344 is 443507931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139705299 and 139705308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857007 + ... + 857169.

Almost surely, 2^139705344 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 139705344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214853120).

139705344 is an abundant number, since it is smaller than the sum of its proper divisors (290000896).

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

139705344 is a wasteful number, since it uses less digits than its factorization.

139705344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 139705344 is about 11819.7015190740. The cubic root of 139705344 is about 518.8848687117.

The spelling of 139705344 in words is "one hundred thirty-nine million, seven hundred five thousand, three hundred forty-four".