138777414 has 8 divisors (see below), whose sum is σ = 277554840. Its totient is φ = 46259136.

The previous prime is 138777403. The next prime is 138777437. The reversal of 138777414 is 414777831.

It is a sphenic number, since it is the product of 3 distinct primes.

138777414 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 11564779 + ... + 11564790.

It is an arithmetic number, because the mean of its divisors is an integer number (34694355).

Almost surely, 2^138777414 is an apocalyptic number.

138777414 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138777414 is a wasteful number, since it uses less digits than its factorization.

138777414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23129574.

The product of its digits is 131712, while the sum is 42.

The square root of 138777414 is about 11780.3825914102. The cubic root of 138777414 is about 517.7334958818.

The spelling of 138777414 in words is "one hundred thirty-eight million, seven hundred seventy-seven thousand, four hundred fourteen".