138562727 has 4 divisors (see below), whose sum is σ = 141785160. Its totient is φ = 135340296.

The previous prime is 138562703. The next prime is 138562751. The reversal of 138562727 is 727265831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (138562703) and next prime (138562751).

It is a cyclic number.

It is not a de Polignac number, because 138562727 - 2⁸ = 138562471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138562757) 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 in 3 ways as a sum of consecutive naturals, for example, 1611152 + ... + 1611237.

It is an arithmetic number, because the mean of its divisors is an integer number (35446290).

Almost surely, 2^138562727 is an apocalyptic number.

138562727 is a deficient number, since it is larger than the sum of its proper divisors (3222433).

138562727 is an equidigital number, since it uses as much as digits as its factorization.

138562727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222432.

The product of its digits is 141120, while the sum is 41.

The square root of 138562727 is about 11771.2670091201. The cubic root of 138562727 is about 517.4663822514.

The spelling of 138562727 in words is "one hundred thirty-eight million, five hundred sixty-two thousand, seven hundred twenty-seven".