38009789 has 2 divisors, whose sum is σ = 38009790. Its totient is φ = 38009788.

The previous prime is 38009761. The next prime is 38009791. The reversal of 38009789 is 98790083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 18207289 = 4450^2 + 4267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38009789 is a prime.

Together with 38009791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38009759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19004894 + 19004895.

It is an arithmetic number, because the mean of its divisors is an integer number (19004895).

Almost surely, 2^38009789 is an apocalyptic number.

It is an amenable number.

38009789 is a deficient number, since it is larger than the sum of its proper divisors (1).

38009789 is an equidigital number, since it uses as much as digits as its factorization.

38009789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 38009789 is about 6165.2079445871. The cubic root of 38009789 is about 336.2264069533.

The spelling of 38009789 in words is "thirty-eight million, nine thousand, seven hundred eighty-nine".