138415339 has 2 divisors, whose sum is σ = 138415340. Its totient is φ = 138415338.

The previous prime is 138415331. The next prime is 138415351. The reversal of 138415339 is 933514831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138415339 - 2³ = 138415331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138415298 and 138415307.

It is not a weakly prime, because it can be changed into another prime (138415331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69207669 + 69207670.

It is an arithmetic number, because the mean of its divisors is an integer number (69207670).

Almost surely, 2^138415339 is an apocalyptic number.

138415339 is a deficient number, since it is larger than the sum of its proper divisors (1).

138415339 is an equidigital number, since it uses as much as digits as its factorization.

138415339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 138415339 is about 11765.0048448779. The cubic root of 138415339 is about 517.2828422890.

The spelling of 138415339 in words is "one hundred thirty-eight million, four hundred fifteen thousand, three hundred thirty-nine".