39604897 has 2 divisors, whose sum is σ = 39604898. Its totient is φ = 39604896.

The previous prime is 39604889. The next prime is 39604913. The reversal of 39604897 is 79840693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25796241 + 13808656 = 5079^2 + 3716^2 .

It is an emirp because it is prime and its reverse (79840693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39604897 - 2³ = 39604889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39604997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19802448 + 19802449.

It is an arithmetic number, because the mean of its divisors is an integer number (19802449).

Almost surely, 2^39604897 is an apocalyptic number.

It is an amenable number.

39604897 is a deficient number, since it is larger than the sum of its proper divisors (1).

39604897 is an equidigital number, since it uses as much as digits as its factorization.

39604897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 39604897 is about 6293.2421691843. The cubic root of 39604897 is about 340.8654336703.

The spelling of 39604897 in words is "thirty-nine million, six hundred four thousand, eight hundred ninety-seven".