139472 has 20 divisors (see below), whose sum is σ = 282720. Its totient is φ = 66528.

The previous prime is 139459. The next prime is 139483. The reversal of 139472 is 274931.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139472.

It is an unprimeable number.

139472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (14136).

2¹³⁹⁴⁷² 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 139472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141360).

139472 is an abundant number, since it is smaller than the sum of its proper divisors (143248).

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

139472 is a wasteful number, since it uses less digits than its factorization.

139472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 404 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 139472 is about 373.4595024899. The cubic root of 139472 is about 51.8595817148.

The spelling of 139472 in words is "one hundred thirty-nine thousand, four hundred seventy-two".