138086407 has 2 divisors, whose sum is σ = 138086408. Its totient is φ = 138086406.

The previous prime is 138086363. The next prime is 138086413. The reversal of 138086407 is 704680831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138086407 - 2⁷ = 138086279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138086477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69043203 + 69043204.

It is an arithmetic number, because the mean of its divisors is an integer number (69043204).

Almost surely, 2^138086407 is an apocalyptic number.

138086407 is a deficient number, since it is larger than the sum of its proper divisors (1).

138086407 is an equidigital number, since it uses as much as digits as its factorization.

138086407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 138086407 is about 11751.0172751128. The cubic root of 138086407 is about 516.8727580641.

The spelling of 138086407 in words is "one hundred thirty-eight million, eighty-six thousand, four hundred seven".