138914177 has 4 divisors (see below), whose sum is σ = 140143620. Its totient is φ = 137684736.

The previous prime is 138914159. The next prime is 138914179. The reversal of 138914177 is 771419831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12666481 + 126247696 = 3559^2 + 11236^2 .

It is a cyclic number.

It is not a de Polignac number, because 138914177 - 2¹⁶ = 138848641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138914179) 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, 614552 + ... + 614777.

It is an arithmetic number, because the mean of its divisors is an integer number (35035905).

Almost surely, 2^138914177 is an apocalyptic number.

It is an amenable number.

138914177 is a deficient number, since it is larger than the sum of its proper divisors (1229443).

138914177 is a wasteful number, since it uses less digits than its factorization.

138914177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229442.

The product of its digits is 42336, while the sum is 41.

The square root of 138914177 is about 11786.1858546351. The cubic root of 138914177 is about 517.9035128346.

The spelling of 138914177 in words is "one hundred thirty-eight million, nine hundred fourteen thousand, one hundred seventy-seven".