39708397 has 2 divisors, whose sum is σ = 39708398. Its totient is φ = 39708396.

The previous prime is 39708359. The next prime is 39708401. The reversal of 39708397 is 79380793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38118276 + 1590121 = 6174^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 39708397 - 2¹⁹ = 39184109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39708197) 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, 19854198 + 19854199.

It is an arithmetic number, because the mean of its divisors is an integer number (19854199).

Almost surely, 2^39708397 is an apocalyptic number.

It is an amenable number.

39708397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39708397 is an equidigital number, since it uses as much as digits as its factorization.

39708397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 39708397 is about 6301.4599102113. The cubic root of 39708397 is about 341.1621047675.

The spelling of 39708397 in words is "thirty-nine million, seven hundred eight thousand, three hundred ninety-seven".