38789689 has 2 divisors, whose sum is σ = 38789690. Its totient is φ = 38789688.

The previous prime is 38789687. The next prime is 38789713. The reversal of 38789689 is 98698783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19954089 + 18835600 = 4467^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 38789689 - 2¹ = 38789687 is a prime.

Together with 38789687, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38789683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19394844 + 19394845.

It is an arithmetic number, because the mean of its divisors is an integer number (19394845).

Almost surely, 2^38789689 is an apocalyptic number.

It is an amenable number.

38789689 is a deficient number, since it is larger than the sum of its proper divisors (1).

38789689 is an equidigital number, since it uses as much as digits as its factorization.

38789689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 58.

The square root of 38789689 is about 6228.1368803198. The cubic root of 38789689 is about 338.5104648663.

The spelling of 38789689 in words is "thirty-eight million, seven hundred eighty-nine thousand, six hundred eighty-nine".