38857397 has 2 divisors, whose sum is σ = 38857398. Its totient is φ = 38857396.

The previous prime is 38857349. The next prime is 38857409. The reversal of 38857397 is 79375883.

38857397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28366276 + 10491121 = 5326^2 + 3239^2 .

It is a cyclic number.

It is not a de Polignac number, because 38857397 - 2⁶ = 38857333 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 (38857307) 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 as a sum of consecutive naturals, namely, 19428698 + 19428699.

It is an arithmetic number, because the mean of its divisors is an integer number (19428699).

Almost surely, 2^38857397 is an apocalyptic number.

It is an amenable number.

38857397 is a deficient number, since it is larger than the sum of its proper divisors (1).

38857397 is an equidigital number, since it uses as much as digits as its factorization.

38857397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 38857397 is about 6233.5701648413. The cubic root of 38857397 is about 338.7073087906.

The spelling of 38857397 in words is "thirty-eight million, eight hundred fifty-seven thousand, three hundred ninety-seven".