138843411 has 48 divisors (see below), whose sum is σ = 223388928. Its totient is φ = 76440000.

The previous prime is 138843401. The next prime is 138843413. The reversal of 138843411 is 114348831.

It is not a de Polignac number, because 138843411 - 2⁵ = 138843379 is a prime.

It is a super-2 number, since 2×138843411² = 38554985556229842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138843413) 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 47 ways as a sum of consecutive naturals, for example, 553036 + ... + 553286.

It is an arithmetic number, because the mean of its divisors is an integer number (4653936).

Almost surely, 2^138843411 is an apocalyptic number.

138843411 is a deficient number, since it is larger than the sum of its proper divisors (84545517).

138843411 is a wasteful number, since it uses less digits than its factorization.

138843411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 385 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 138843411 is about 11783.1833983860. The cubic root of 138843411 is about 517.8155540052.

The spelling of 138843411 in words is "one hundred thirty-eight million, eight hundred forty-three thousand, four hundred eleven".