139061216 has 72 divisors (see below), whose sum is σ = 321380136. Its totient is φ = 59055360.

The previous prime is 139061201. The next prime is 139061249. The reversal of 139061216 is 612160931.

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 11 ways as a sum of consecutive naturals, for example, 205070 + ... + 205746.

It is an arithmetic number, because the mean of its divisors is an integer number (4463613).

Almost surely, 2^139061216 is an apocalyptic number.

139061216 is a gapful number since it is divisible by the number (16) 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 139061216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160690068).

139061216 is an abundant number, since it is smaller than the sum of its proper divisors (182318920).

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

139061216 is a wasteful number, since it uses less digits than its factorization.

139061216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 139061216 is about 11792.4219734540. The cubic root of 139061216 is about 518.0861799638.

The spelling of 139061216 in words is "one hundred thirty-nine million, sixty-one thousand, two hundred sixteen".