38891289 has 16 divisors (see below), whose sum is σ = 52969280. Its totient is φ = 25375680.

The previous prime is 38891287. The next prime is 38891297. The reversal of 38891289 is 98219883.

It is a happy number.

38891289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38891289 - 2¹ = 38891287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38891287) 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 15 ways as a sum of consecutive naturals, for example, 35847 + ... + 36915.

It is an arithmetic number, because the mean of its divisors is an integer number (3310580).

Almost surely, 2^38891289 is an apocalyptic number.

It is an amenable number.

38891289 is a deficient number, since it is larger than the sum of its proper divisors (14077991).

38891289 is a wasteful number, since it uses less digits than its factorization.

38891289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its digits is 248832, while the sum is 48.

The square root of 38891289 is about 6236.2880786570. The cubic root of 38891289 is about 338.8057553593.

The spelling of 38891289 in words is "thirty-eight million, eight hundred ninety-one thousand, two hundred eighty-nine".