139941828 has 72 divisors (see below), whose sum is σ = 386725248. Its totient is φ = 42406848.

The previous prime is 139941827. The next prime is 139941829. The reversal of 139941828 is 828149931.

139941828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139941827) and next prime (139941829).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139941827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29125 + ... + 33587.

It is an arithmetic number, because the mean of its divisors is an integer number (5371184).

Almost surely, 2^139941828 is an apocalyptic number.

139941828 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 139941828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193362624).

139941828 is an abundant number, since it is smaller than the sum of its proper divisors (246783420).

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

139941828 is a wasteful number, since it uses less digits than its factorization.

139941828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553 (or 4548 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 139941828 is about 11829.7010951249. The cubic root of 139941828 is about 519.1774817058.

The spelling of 139941828 in words is "one hundred thirty-nine million, nine hundred forty-one thousand, eight hundred twenty-eight".