139995648 has 320 divisors, whose sum is σ = 481219200. Its totient is φ = 39813120.

The previous prime is 139995601. The next prime is 139995649. The reversal of 139995648 is 846599931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 139995594 and 139995603.

It is not an unprimeable number, because it can be changed into a prime (139995649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3414508 + ... + 3414548.

It is an arithmetic number, because the mean of its divisors is an integer number (1503810).

Almost surely, 2^139995648 is an apocalyptic number.

139995648 is a gapful number since it is divisible by the number (18) 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 139995648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240609600).

139995648 is an abundant number, since it is smaller than the sum of its proper divisors (341223552).

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

139995648 is a wasteful number, since it uses less digits than its factorization.

139995648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 78 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 139995648 is about 11831.9756592042. The cubic root of 139995648 is about 519.2440297164.

The spelling of 139995648 in words is "one hundred thirty-nine million, nine hundred ninety-five thousand, six hundred forty-eight".