138834944 has 22 divisors (see below), whose sum is σ = 277536354. Its totient is φ = 69416960.

The previous prime is 138834929. The next prime is 138834953. The reversal of 138834944 is 449438831.

It can be written as a sum of positive squares in only one way, i.e., 114233344 + 24601600 = 10688^2 + 4960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138834895 and 138834904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66767 + ... + 68814.

Almost surely, 2^138834944 is an apocalyptic number.

It is an amenable number.

138834944 is a deficient number, since it is larger than the sum of its proper divisors (138701410).

138834944 is an equidigital number, since it uses as much as digits as its factorization.

138834944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135601 (or 135583 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 138834944 is about 11782.8241096946. The cubic root of 138834944 is about 517.8050279183.

The spelling of 138834944 in words is "one hundred thirty-eight million, eight hundred thirty-four thousand, nine hundred forty-four".