138760459 has 2 divisors, whose sum is σ = 138760460. Its totient is φ = 138760458.

The previous prime is 138760429. The next prime is 138760469. The reversal of 138760459 is 954067831.

It is a strong prime.

It is an emirp because it is prime and its reverse (954067831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138760459 - 2¹³ = 138752267 is a prime.

It is not a weakly prime, because it can be changed into another prime (138760429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69380229 + 69380230.

It is an arithmetic number, because the mean of its divisors is an integer number (69380230).

Almost surely, 2^138760459 is an apocalyptic number.

138760459 is a deficient number, since it is larger than the sum of its proper divisors (1).

138760459 is an equidigital number, since it uses as much as digits as its factorization.

138760459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 138760459 is about 11779.6629408485. The cubic root of 138760459 is about 517.7124104888.

The spelling of 138760459 in words is "one hundred thirty-eight million, seven hundred sixty thousand, four hundred fifty-nine".