139883820 has 96 divisors (see below), whose sum is σ = 429105600. Its totient is φ = 33890304.

The previous prime is 139883819. The next prime is 139883827. The reversal of 139883820 is 28388931.

139883820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139883827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27216 + ... + 31944.

It is an arithmetic number, because the mean of its divisors is an integer number (4469850).

Almost surely, 2^139883820 is an apocalyptic number.

139883820 is a gapful number since it is divisible by the number (10) 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 139883820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214552800).

139883820 is an abundant number, since it is smaller than the sum of its proper divisors (289221780).

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

139883820 is a wasteful number, since it uses less digits than its factorization.

139883820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787 (or 4785 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 139883820 is about 11827.2490461645. The cubic root of 139883820 is about 519.1057361575.

The spelling of 139883820 in words is "one hundred thirty-nine million, eight hundred eighty-three thousand, eight hundred twenty".