138449552 has 20 divisors (see below), whose sum is σ = 268433340. Its totient is φ = 69176448.

The previous prime is 138449539. The next prime is 138449573. The reversal of 138449552 is 255944831.

It can be written as a sum of positive squares in 2 ways, for example, as 41938576 + 96510976 = 6476^2 + 9824^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35474 + ... + 39182.

It is an arithmetic number, because the mean of its divisors is an integer number (13421667).

Almost surely, 2^138449552 is an apocalyptic number.

It is an amenable number.

138449552 is a deficient number, since it is larger than the sum of its proper divisors (129983788).

138449552 is a wasteful number, since it uses less digits than its factorization.

138449552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050 (or 6044 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 138449552 is about 11766.4587705902. The cubic root of 138449552 is about 517.3254588084.

The spelling of 138449552 in words is "one hundred thirty-eight million, four hundred forty-nine thousand, five hundred fifty-two".