138277199 has 2 divisors, whose sum is σ = 138277200. Its totient is φ = 138277198.

The previous prime is 138277189. The next prime is 138277259. The reversal of 138277199 is 991772831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138277199 - 2¹⁶ = 138211663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138277189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69138599 + 69138600.

It is an arithmetic number, because the mean of its divisors is an integer number (69138600).

Almost surely, 2^138277199 is an apocalyptic number.

138277199 is a deficient number, since it is larger than the sum of its proper divisors (1).

138277199 is an equidigital number, since it uses as much as digits as its factorization.

138277199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 47.

The square root of 138277199 is about 11759.1325785536. The cubic root of 138277199 is about 517.1107003927.

The spelling of 138277199 in words is "one hundred thirty-eight million, two hundred seventy-seven thousand, one hundred ninety-nine".