138954656 has 12 divisors (see below), whose sum is σ = 273567042. Its totient is φ = 69477312.

The previous prime is 138954653. The next prime is 138954667. The reversal of 138954656 is 656459831.

It is a happy number.

138954656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 137264656 + 1690000 = 11716^2 + 1300^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138954656.

It is not an unprimeable number, because it can be changed into a prime (138954653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2171135 + ... + 2171198.

Almost surely, 2^138954656 is an apocalyptic number.

138954656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138954656 is a deficient number, since it is larger than the sum of its proper divisors (134612386).

138954656 is an equidigital number, since it uses as much as digits as its factorization.

138954656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342343 (or 4342335 counting only the distinct ones).

The product of its digits is 777600, while the sum is 47.

The square root of 138954656 is about 11787.9029517552. The cubic root of 138954656 is about 517.9538129091.

The spelling of 138954656 in words is "one hundred thirty-eight million, nine hundred fifty-four thousand, six hundred fifty-six".