139868712 has 48 divisors (see below), whose sum is σ = 388058580. Its totient is φ = 45484800.

The previous prime is 139868699. The next prime is 139868717. The reversal of 139868712 is 217868931.

It can be written as a sum of positive squares in 2 ways, for example, as 139570596 + 298116 = 11814^2 + 546^2 .

It is not an unprimeable number, because it can be changed into a prime (139868717) 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 11 ways as a sum of consecutive naturals, for example, 20739 + ... + 26642.

Almost surely, 2^139868712 is an apocalyptic number.

139868712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139868712 is an abundant number, since it is smaller than the sum of its proper divisors (248189868).

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

139868712 is a wasteful number, since it uses less digits than its factorization.

139868712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47434 (or 47427 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 139868712 is about 11826.6103343266. The cubic root of 139868712 is about 519.0870470010.

The spelling of 139868712 in words is "one hundred thirty-nine million, eight hundred sixty-eight thousand, seven hundred twelve".