138910601 has 4 divisors (see below), whose sum is σ = 139289472. Its totient is φ = 138531732.

The previous prime is 138910579. The next prime is 138910627. The reversal of 138910601 is 106019831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138910601 - 2¹⁰ = 138909577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138910001) 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 3 ways as a sum of consecutive naturals, for example, 188885 + ... + 189618.

It is an arithmetic number, because the mean of its divisors is an integer number (34822368).

Almost surely, 2^138910601 is an apocalyptic number.

It is an amenable number.

138910601 is a deficient number, since it is larger than the sum of its proper divisors (378871).

138910601 is an equidigital number, since it uses as much as digits as its factorization.

138910601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378870.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 138910601 is about 11786.0341506378. The cubic root of 138910601 is about 517.8990687505.

The spelling of 138910601 in words is "one hundred thirty-eight million, nine hundred ten thousand, six hundred one".