138554389 has 8 divisors (see below), whose sum is σ = 140031360. Its totient is φ = 137085456.

The previous prime is 138554359. The next prime is 138554393. The reversal of 138554389 is 983455831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138554389 - 2⁵ = 138554357 is a prime.

It is a super-2 number, since 2×138554389² = 38394637422326642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138554309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36432 + ... + 40054.

It is an arithmetic number, because the mean of its divisors is an integer number (17503920).

Almost surely, 2^138554389 is an apocalyptic number.

It is an amenable number.

138554389 is a deficient number, since it is larger than the sum of its proper divisors (1476971).

138554389 is a wasteful number, since it uses less digits than its factorization.

138554389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019.

The product of its digits is 518400, while the sum is 46.

The square root of 138554389 is about 11770.9128363097. The cubic root of 138554389 is about 517.4560025451.

The spelling of 138554389 in words is "one hundred thirty-eight million, five hundred fifty-four thousand, three hundred eighty-nine".