138776875 has 10 divisors (see below), whose sum is σ = 173416364. Its totient is φ = 111021000.

The previous prime is 138776873. The next prime is 138776879. The reversal of 138776875 is 578677831.

It is not a de Polignac number, because 138776875 - 2¹ = 138776873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138776873) 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 9 ways as a sum of consecutive naturals, for example, 110397 + ... + 111646.

Almost surely, 2^138776875 is an apocalyptic number.

138776875 is a deficient number, since it is larger than the sum of its proper divisors (34639489).

138776875 is an frugal number, since it uses more digits than its factorization.

138776875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222063 (or 222048 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 52.

The square root of 138776875 is about 11780.3597143721. The cubic root of 138776875 is about 517.7328256029.

The spelling of 138776875 in words is "one hundred thirty-eight million, seven hundred seventy-six thousand, eight hundred seventy-five".