3897547 has 4 divisors (see below), whose sum is σ = 3904576. Its totient is φ = 3890520.

The previous prime is 3897521. The next prime is 3897559. The reversal of 3897547 is 7457983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7457983 = 13 ⋅573691.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3897547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3897587) 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, 2604 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (976144).

Almost surely, 2^3897547 is an apocalyptic number.

3897547 is a deficient number, since it is larger than the sum of its proper divisors (7029).

3897547 is an equidigital number, since it uses as much as digits as its factorization.

3897547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7028.

The product of its digits is 211680, while the sum is 43.

The square root of 3897547 is about 1974.2206057075. The cubic root of 3897547 is about 157.3730832765.

It can be divided in two parts, 3897 and 547, that added together give a palindrome (4444).

The spelling of 3897547 in words is "three million, eight hundred ninety-seven thousand, five hundred forty-seven".