139897160 has 64 divisors (see below), whose sum is σ = 350708400. Its totient is φ = 49867776.

The previous prime is 139897159. The next prime is 139897169. The reversal of 139897160 is 61798931.

139897160 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 58644964 + 81252196 = 7658^2 + 9014^2 .

It is not an unprimeable number, because it can be changed into a prime (139897169) 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 15 ways as a sum of consecutive naturals, for example, 10442 + ... + 19718.

Almost surely, 2^139897160 is an apocalyptic number.

139897160 is a gapful number since it is divisible by the number (10) 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 139897160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175354200).

139897160 is an abundant number, since it is smaller than the sum of its proper divisors (210811240).

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

139897160 is a wasteful number, since it uses less digits than its factorization.

139897160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9330 (or 9326 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 139897160 is about 11827.8129846561. The cubic root of 139897160 is about 519.1222371138.

The spelling of 139897160 in words is "one hundred thirty-nine million, eight hundred ninety-seven thousand, one hundred sixty".