38821297 has 2 divisors, whose sum is σ = 38821298. Its totient is φ = 38821296.

The previous prime is 38821283. The next prime is 38821333. The reversal of 38821297 is 79212883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34857216 + 3964081 = 5904^2 + 1991^2 .

It is an emirp because it is prime and its reverse (79212883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38821297 - 2¹⁹ = 38297009 is a prime.

It is not a weakly prime, because it can be changed into another prime (38821247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19410648 + 19410649.

It is an arithmetic number, because the mean of its divisors is an integer number (19410649).

Almost surely, 2^38821297 is an apocalyptic number.

It is an amenable number.

38821297 is a deficient number, since it is larger than the sum of its proper divisors (1).

38821297 is an equidigital number, since it uses as much as digits as its factorization.

38821297 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 38821297 is about 6230.6738800871. The cubic root of 38821297 is about 338.6023856331.

The spelling of 38821297 in words is "thirty-eight million, eight hundred twenty-one thousand, two hundred ninety-seven".