138926299 has 2 divisors, whose sum is σ = 138926300. Its totient is φ = 138926298.

The previous prime is 138926287. The next prime is 138926321. The reversal of 138926299 is 992629831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138926299 - 2⁵ = 138926267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138926239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69463149 + 69463150.

It is an arithmetic number, because the mean of its divisors is an integer number (69463150).

Almost surely, 2^138926299 is an apocalyptic number.

138926299 is a deficient number, since it is larger than the sum of its proper divisors (1).

138926299 is an equidigital number, since it uses as much as digits as its factorization.

138926299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 49.

The square root of 138926299 is about 11786.7000895077. The cubic root of 138926299 is about 517.9185769169.

The spelling of 138926299 in words is "one hundred thirty-eight million, nine hundred twenty-six thousand, two hundred ninety-nine".