139348944 has 240 divisors, whose sum is σ = 483451200. Its totient is φ = 38271744.

The previous prime is 139348921. The next prime is 139348967. The reversal of 139348944 is 449843931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139348921) and next prime (139348967).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 139348944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613759 + ... + 613985.

It is an arithmetic number, because the mean of its divisors is an integer number (2014380).

Almost surely, 2^139348944 is an apocalyptic number.

139348944 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 139348944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241725600).

139348944 is an abundant number, since it is smaller than the sum of its proper divisors (344102256).

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

139348944 is a wasteful number, since it uses less digits than its factorization.

139348944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 268 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 139348944 is about 11804.6153685751. The cubic root of 139348944 is about 518.4432534212.

The spelling of 139348944 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, nine hundred forty-four".