139838000 has 80 divisors (see below), whose sum is σ = 349932960. Its totient is φ = 53984000.

The previous prime is 139837987. The next prime is 139838033. The reversal of 139838000 is 838931.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56795 + ... + 59205.

It is an arithmetic number, because the mean of its divisors is an integer number (4374162).

Almost surely, 2^139838000 is an apocalyptic number.

139838000 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 139838000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174966480).

139838000 is an abundant number, since it is smaller than the sum of its proper divisors (210094960).

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

139838000 is a wasteful number, since it uses less digits than its factorization.

139838000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 139838000 is about 11825.3118352118. The cubic root of 139838000 is about 519.0490509685.

The spelling of 139838000 in words is "one hundred thirty-nine million, eight hundred thirty-eight thousand".