139717872 has 100 divisors (see below), whose sum is σ = 462183216. Its totient is φ = 39916800.

The previous prime is 139717871. The next prime is 139717889. The reversal of 139717872 is 278717931.

139717872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139717871) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1372 + ... + 16772.

Almost surely, 2^139717872 is an apocalyptic number.

139717872 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 139717872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231091608).

139717872 is an abundant number, since it is smaller than the sum of its proper divisors (322465344).

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

139717872 is a wasteful number, since it uses less digits than its factorization.

139717872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15428 (or 15413 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 139717872 is about 11820.2314698148. The cubic root of 139717872 is about 518.9003784866.

The spelling of 139717872 in words is "one hundred thirty-nine million, seven hundred seventeen thousand, eight hundred seventy-two".