138955467 has 16 divisors (see below), whose sum is σ = 224197632. Its totient is φ = 74732160.

The previous prime is 138955459. The next prime is 138955469. The reversal of 138955467 is 764559831.

It is not a de Polignac number, because 138955467 - 2³ = 138955459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138955469) 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 15 ways as a sum of consecutive naturals, for example, 194259 + ... + 194972.

It is an arithmetic number, because the mean of its divisors is an integer number (14012352).

Almost surely, 2^138955467 is an apocalyptic number.

138955467 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138955467 is a deficient number, since it is larger than the sum of its proper divisors (85242165).

138955467 is a wasteful number, since it uses less digits than its factorization.

138955467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389258.

The product of its digits is 907200, while the sum is 48.

The square root of 138955467 is about 11787.9373513775. The cubic root of 138955467 is about 517.9548205752.

The spelling of 138955467 in words is "one hundred thirty-eight million, nine hundred fifty-five thousand, four hundred sixty-seven".