139081712 has 80 divisors (see below), whose sum is σ = 340454400. Its totient is φ = 53464320.

The previous prime is 139081693. The next prime is 139081739. The reversal of 139081712 is 217180931.

It is a super-2 number, since 2×139081712² = 38687445225701888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 96614 + ... + 98042.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^139081712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139081712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170227200).

139081712 is an abundant number, since it is smaller than the sum of its proper divisors (201372688).

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

139081712 is a wasteful number, since it uses less digits than its factorization.

139081712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 139081712 is about 11793.2909741090. The cubic root of 139081712 is about 518.1116319985. Note that the first 3 decimals are identical.

The spelling of 139081712 in words is "one hundred thirty-nine million, eighty-one thousand, seven hundred twelve".