139348872 has 96 divisors (see below), whose sum is σ = 414250200. Its totient is φ = 42067584.

The previous prime is 139348871. The next prime is 139348877. The reversal of 139348872 is 278843931.

139348872 is a `hidden beast` number, since 13 + 93 + 488 + 72 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 89984196 + 49364676 = 9486^2 + 7026^2 .

It is not an unprimeable number, because it can be changed into a prime (139348871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2629198 + ... + 2629250.

Almost surely, 2^139348872 is an apocalyptic number.

139348872 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 139348872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207125100).

139348872 is an abundant number, since it is smaller than the sum of its proper divisors (274901328).

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

139348872 is an equidigital number, since it uses as much as digits as its factorization.

139348872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 71 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 139348872 is about 11804.6123189201. The cubic root of 139348872 is about 518.4431641299.

The spelling of 139348872 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, eight hundred seventy-two".