138475707 has 8 divisors (see below), whose sum is σ = 184688640. Its totient is φ = 92289960.

The previous prime is 138475699. The next prime is 138475751. The reversal of 138475707 is 707574831.

It is a happy number.

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

It is not a de Polignac number, because 138475707 - 2³ = 138475699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138475907) 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, 16582 + ... + 23492.

It is an arithmetic number, because the mean of its divisors is an integer number (23086080).

Almost surely, 2^138475707 is an apocalyptic number.

138475707 is a deficient number, since it is larger than the sum of its proper divisors (46212933).

138475707 is an equidigital number, since it uses as much as digits as its factorization.

138475707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13593.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 138475707 is about 11767.5701400077. The cubic root of 138475707 is about 517.3580333580.

The spelling of 138475707 in words is "one hundred thirty-eight million, four hundred seventy-five thousand, seven hundred seven".