138967 has 2 divisors, whose sum is σ = 138968. Its totient is φ = 138966.

The previous prime is 138959. The next prime is 138977. The reversal of 138967 is 769831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138967 - 2³ = 138959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69483 + 69484.

It is an arithmetic number, because the mean of its divisors is an integer number (69484).

2¹³⁸⁹⁶⁷ is an apocalyptic number.

138967 is a deficient number, since it is larger than the sum of its proper divisors (1).

138967 is an equidigital number, since it uses as much as digits as its factorization.

138967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 138967 is about 372.7827785722. The cubic root of 138967 is about 51.7969149885.

The spelling of 138967 in words is "one hundred thirty-eight thousand, nine hundred sixty-seven".