3897123 has 4 divisors (see below), whose sum is σ = 5196168. Its totient is φ = 2598080.

The previous prime is 3897121. The next prime is 3897139. The reversal of 3897123 is 3217983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3897123 - 2¹ = 3897121 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3897121) 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, 649518 + ... + 649523.

It is an arithmetic number, because the mean of its divisors is an integer number (1299042).

Almost surely, 2^3897123 is an apocalyptic number.

3897123 is a deficient number, since it is larger than the sum of its proper divisors (1299045).

3897123 is a wasteful number, since it uses less digits than its factorization.

3897123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299044.

The product of its digits is 9072, while the sum is 33.

The square root of 3897123 is about 1974.1132186377. The cubic root of 3897123 is about 157.3673763873.

The spelling of 3897123 in words is "three million, eight hundred ninety-seven thousand, one hundred twenty-three".