39805097 has 4 divisors (see below), whose sum is σ = 39818496. Its totient is φ = 39791700.

The previous prime is 39805069. The next prime is 39805121. The reversal of 39805097 is 79050893.

39805097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79050893 = 769 ⋅102797.

It is a cyclic number.

It is not a de Polignac number, because 39805097 - 2⁸ = 39804841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39805027) 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 in 3 ways as a sum of consecutive naturals, for example, 29 + ... + 8922.

It is an arithmetic number, because the mean of its divisors is an integer number (9954624).

Almost surely, 2^39805097 is an apocalyptic number.

It is an amenable number.

39805097 is a deficient number, since it is larger than the sum of its proper divisors (13399).

39805097 is an equidigital number, since it uses as much as digits as its factorization.

39805097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 39805097 is about 6309.1280697098. The cubic root of 39805097 is about 341.4388189658.

The spelling of 39805097 in words is "thirty-nine million, eight hundred five thousand, ninety-seven".