138449356 has 24 divisors (see below), whose sum is σ = 247729104. Its totient is φ = 67679040.

The previous prime is 138449329. The next prime is 138449369. The reversal of 138449356 is 653944831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69186 + ... + 71158.

It is an arithmetic number, because the mean of its divisors is an integer number (10322046).

Almost surely, 2^138449356 is an apocalyptic number.

It is an amenable number.

138449356 is a deficient number, since it is larger than the sum of its proper divisors (109279748).

138449356 is a wasteful number, since it uses less digits than its factorization.

138449356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2359 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 138449356 is about 11766.4504418282. The cubic root of 138449356 is about 517.3252146861.

The spelling of 138449356 in words is "one hundred thirty-eight million, four hundred forty-nine thousand, three hundred fifty-six".