38212789 has 2 divisors, whose sum is σ = 38212790. Its totient is φ = 38212788.

The previous prime is 38212771. The next prime is 38212793. The reversal of 38212789 is 98721283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 574564 = 6135^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 38212789 - 2¹¹ = 38210741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38212709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19106394 + 19106395.

It is an arithmetic number, because the mean of its divisors is an integer number (19106395).

Almost surely, 2^38212789 is an apocalyptic number.

It is an amenable number.

38212789 is a deficient number, since it is larger than the sum of its proper divisors (1).

38212789 is an equidigital number, since it uses as much as digits as its factorization.

38212789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 38212789 is about 6181.6493753690. The cubic root of 38212789 is about 336.8239092723.

The spelling of 38212789 in words is "thirty-eight million, two hundred twelve thousand, seven hundred eighty-nine".