39397 has 2 divisors, whose sum is σ = 39398. Its totient is φ = 39396.

The previous prime is 39383. The next prime is 39409. The reversal of 39397 is 79393.

39397 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36481 + 2916 = 191^2 + 54^2 .

39397 is a truncatable prime.

It is an emirp because it is prime and its reverse (79393) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19698 + 19699.

It is an arithmetic number, because the mean of its divisors is an integer number (19699).

2³⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

39397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39397 is an equidigital number, since it uses as much as digits as its factorization.

39397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5103, while the sum is 31.

The square root of 39397 is about 198.4867753781. The cubic root of 39397 is about 34.0267954859.

The spelling of 39397 in words is "thirty-nine thousand, three hundred ninety-seven".