139173216 has 192 divisors, whose sum is σ = 457228800. Its totient is φ = 36089856.

The previous prime is 139173197. The next prime is 139173217. The reversal of 139173216 is 612371931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139173217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 777415 + ... + 777593.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^139173216 is an apocalyptic number.

139173216 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 139173216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228614400).

139173216 is an abundant number, since it is smaller than the sum of its proper divisors (318055584).

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

139173216 is a wasteful number, since it uses less digits than its factorization.

139173216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 293 counting only the distinct ones).

The product of its digits is 6804, while the sum is 33.

The square root of 139173216 is about 11797.1698300906. The cubic root of 139173216 is about 518.2252316295.

The spelling of 139173216 in words is "one hundred thirty-nine million, one hundred seventy-three thousand, two hundred sixteen".