3905897 has 4 divisors (see below), whose sum is σ = 3953040. Its totient is φ = 3858756.

The previous prime is 3905879. The next prime is 3905911. The reversal of 3905897 is 7985093.

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.

It is a cyclic number.

It is not a de Polignac number, because 3905897 - 2⁶ = 3905833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3905857) 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, 23447 + ... + 23612.

It is an arithmetic number, because the mean of its divisors is an integer number (988260).

Almost surely, 2^3905897 is an apocalyptic number.

It is an amenable number.

3905897 is a deficient number, since it is larger than the sum of its proper divisors (47143).

3905897 is an equidigital number, since it uses as much as digits as its factorization.

3905897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47142.

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

The square root of 3905897 is about 1976.3342328665. The cubic root of 3905897 is about 157.4853870712.

The spelling of 3905897 in words is "three million, nine hundred five thousand, eight hundred ninety-seven".