138006499 has 2 divisors, whose sum is σ = 138006500. Its totient is φ = 138006498.

The previous prime is 138006469. The next prime is 138006521. The reversal of 138006499 is 994600831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138006499 - 2¹³ = 137998307 is a prime.

It is not a weakly prime, because it can be changed into another prime (138006419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69003249 + 69003250.

It is an arithmetic number, because the mean of its divisors is an integer number (69003250).

Almost surely, 2^138006499 is an apocalyptic number.

138006499 is a deficient number, since it is larger than the sum of its proper divisors (1).

138006499 is an equidigital number, since it uses as much as digits as its factorization.

138006499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 138006499 is about 11747.6167370237. The cubic root of 138006499 is about 516.7730373198.

The spelling of 138006499 in words is "one hundred thirty-eight million, six thousand, four hundred ninety-nine".