138097412 has 12 divisors (see below), whose sum is σ = 245632716. Its totient is φ = 67916640.

The previous prime is 138097411. The next prime is 138097417. The reversal of 138097412 is 214790831.

It can be written as a sum of positive squares in 2 ways, for example, as 59845696 + 78251716 = 7736^2 + 8846^2 .

It is not an unprimeable number, because it can be changed into a prime (138097411) 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 3 ways as a sum of consecutive naturals, for example, 282743 + ... + 283230.

It is an arithmetic number, because the mean of its divisors is an integer number (20469393).

Almost surely, 2^138097412 is an apocalyptic number.

It is an amenable number.

138097412 is a deficient number, since it is larger than the sum of its proper divisors (107535304).

138097412 is a wasteful number, since it uses less digits than its factorization.

138097412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566038 (or 566036 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 138097412 is about 11751.4855231158. The cubic root of 138097412 is about 516.8864886784.

The spelling of 138097412 in words is "one hundred thirty-eight million, ninety-seven thousand, four hundred twelve".