3897109 has 4 divisors (see below), whose sum is σ = 4102240. Its totient is φ = 3691980.

The previous prime is 3897083. The next prime is 3897121. The reversal of 3897109 is 9017983.

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 an emirpimes, since its reverse is a distinct semiprime: 9017983 = 13 ⋅693691.

It is a cyclic number.

It is not a de Polignac number, because 3897109 - 2⁹ = 3896597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102537 + ... + 102574.

It is an arithmetic number, because the mean of its divisors is an integer number (1025560).

Almost surely, 2^3897109 is an apocalyptic number.

It is an amenable number.

3897109 is a deficient number, since it is larger than the sum of its proper divisors (205131).

3897109 is a wasteful number, since it uses less digits than its factorization.

3897109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205130.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 3897109 is about 1974.1096727386. The cubic root of 3897109 is about 157.3671879452.

The spelling of 3897109 in words is "three million, eight hundred ninety-seven thousand, one hundred nine".