138070347 has 8 divisors (see below), whose sum is σ = 189069456. Its totient is φ = 89559072.

The previous prime is 138070343. The next prime is 138070393. The reversal of 138070347 is 743070831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138070347 - 2² = 138070343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138070343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621828 + ... + 622049.

It is an arithmetic number, because the mean of its divisors is an integer number (23633682).

Almost surely, 2^138070347 is an apocalyptic number.

138070347 is a deficient number, since it is larger than the sum of its proper divisors (50999109).

138070347 is a wasteful number, since it uses less digits than its factorization.

138070347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243917.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 138070347 is about 11750.3339101491. Note that the first 3 decimals coincide. The cubic root of 138070347 is about 516.8527191660.

The spelling of 138070347 in words is "one hundred thirty-eight million, seventy thousand, three hundred forty-seven".