139006000 has 80 divisors (see below), whose sum is σ = 384171840. Its totient is φ = 47654400.

The previous prime is 139005989. The next prime is 139006013. The reversal of 139006000 is 600931.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9036 + ... + 18964.

It is an arithmetic number, because the mean of its divisors is an integer number (4802148).

Almost surely, 2^139006000 is an apocalyptic number.

139006000 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 139006000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192085920).

139006000 is an abundant number, since it is smaller than the sum of its proper divisors (245165840).

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

139006000 is an equidigital number, since it uses as much as digits as its factorization.

139006000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959 (or 9943 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 139006000 is about 11790.0805764846. The cubic root of 139006000 is about 518.0176000142.

Adding to 139006000 its reverse (600931), we get a palindrome (139606931).

It can be divided in two parts, 13900 and 6000, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 139006000 in words is "one hundred thirty-nine million, six thousand".