138890041 has 8 divisors (see below), whose sum is σ = 140526464. Its totient is φ = 137259360.

The previous prime is 138890039. The next prime is 138890047. The reversal of 138890041 is 140098831.

It is a happy number.

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 138890041 - 2¹ = 138890039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138889979 and 138890006.

It is not an unprimeable number, because it can be changed into a prime (138890047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63925 + ... + 66061.

It is an arithmetic number, because the mean of its divisors is an integer number (17565808).

Almost surely, 2^138890041 is an apocalyptic number.

It is an amenable number.

138890041 is a deficient number, since it is larger than the sum of its proper divisors (1636423).

138890041 is a wasteful number, since it uses less digits than its factorization.

138890041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 138890041 is about 11785.1618996092. The cubic root of 138890041 is about 517.8735162725.

The spelling of 138890041 in words is "one hundred thirty-eight million, eight hundred ninety thousand, forty-one".