139384448 has 64 divisors (see below), whose sum is σ = 321846720. Its totient is φ = 58890240.

The previous prime is 139384433. The next prime is 139384471. The reversal of 139384448 is 844483931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 139384399 and 139384408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64343 + ... + 66473.

It is an arithmetic number, because the mean of its divisors is an integer number (5028855).

Almost surely, 2^139384448 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 139384448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160923360).

139384448 is an abundant number, since it is smaller than the sum of its proper divisors (182462272).

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

139384448 is an equidigital number, since it uses as much as digits as its factorization.

139384448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2213 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 139384448 is about 11806.1190913865. The cubic root of 139384448 is about 518.4872801780.

The spelling of 139384448 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, four hundred forty-eight".