138774223 has 6 divisors (see below), whose sum is σ = 161431296. Its totient is φ = 118949292.

The previous prime is 138774191. The next prime is 138774227. The reversal of 138774223 is 322477831.

It is not a de Polignac number, because 138774223 - 2⁵ = 138774191 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 (138774227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1416015 + ... + 1416112.

It is an arithmetic number, because the mean of its divisors is an integer number (26905216).

Almost surely, 2^138774223 is an apocalyptic number.

138774223 is a deficient number, since it is larger than the sum of its proper divisors (22657073).

138774223 is an equidigital number, since it uses as much as digits as its factorization.

138774223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832141 (or 2832134 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 138774223 is about 11780.2471536042. The cubic root of 138774223 is about 517.7295276562.

The spelling of 138774223 in words is "one hundred thirty-eight million, seven hundred seventy-four thousand, two hundred twenty-three".