138429344 has 24 divisors (see below), whose sum is σ = 274371300. Its totient is φ = 68747776.

The previous prime is 138429337. The next prime is 138429359. The reversal of 138429344 is 443924831.

138429344 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 2 ways, for example, as 126787600 + 11641744 = 11260^2 + 3412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138429298 and 138429307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9749 + ... + 19284.

Almost surely, 2^138429344 is an apocalyptic number.

It is an amenable number.

138429344 is a deficient number, since it is larger than the sum of its proper divisors (135941956).

138429344 is a wasteful number, since it uses less digits than its factorization.

138429344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29192 (or 29184 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 138429344 is about 11765.6000271979. The cubic root of 138429344 is about 517.3002880960.

The spelling of 138429344 in words is "one hundred thirty-eight million, four hundred twenty-nine thousand, three hundred forty-four".