139806912 has 224 divisors, whose sum is σ = 465246720. Its totient is φ = 36126720.

The previous prime is 139806907. The next prime is 139806913. The reversal of 139806912 is 219608931.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139806913) 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, 662487 + ... + 662697.

Almost surely, 2^139806912 is an apocalyptic number.

139806912 is a gapful number since it is divisible by the number (12) 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 139806912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232623360).

139806912 is an abundant number, since it is smaller than the sum of its proper divisors (325439808).

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

139806912 is a wasteful number, since it uses less digits than its factorization.

139806912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 139806912 is about 11823.9972936397. The cubic root of 139806912 is about 519.0105840929.

The spelling of 139806912 in words is "one hundred thirty-nine million, eight hundred six thousand, nine hundred twelve".