138601417 has 2 divisors, whose sum is σ = 138601418. Its totient is φ = 138601416.

The previous prime is 138601399. The next prime is 138601481. The reversal of 138601417 is 714106831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120033936 + 18567481 = 10956^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 138601417 - 2¹¹ = 138599369 is a prime.

It is not a weakly prime, because it can be changed into another prime (138601117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69300708 + 69300709.

It is an arithmetic number, because the mean of its divisors is an integer number (69300709).

Almost surely, 2^138601417 is an apocalyptic number.

It is an amenable number.

138601417 is a deficient number, since it is larger than the sum of its proper divisors (1).

138601417 is an equidigital number, since it uses as much as digits as its factorization.

138601417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 138601417 is about 11772.9103028945. The cubic root of 138601417 is about 517.5145407320.

The spelling of 138601417 in words is "one hundred thirty-eight million, six hundred one thousand, four hundred seventeen".