3547897 has 4 divisors (see below), whose sum is σ = 3563620. Its totient is φ = 3532176.

The previous prime is 3547879. The next prime is 3547909. The reversal of 3547897 is 7987453.

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: 7987453 = 79 ⋅101107.

It can be written as a sum of positive squares in 2 ways, for example, as 1687401 + 1860496 = 1299^2 + 1364^2 .

It is a cyclic number.

It is not a de Polignac number, because 3547897 - 2⁷ = 3547769 is a prime.

It is a Duffinian number.

3547897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3547837) 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, 7518 + ... + 7975.

It is an arithmetic number, because the mean of its divisors is an integer number (890905).

Almost surely, 2^3547897 is an apocalyptic number.

It is an amenable number.

3547897 is a deficient number, since it is larger than the sum of its proper divisors (15723).

3547897 is a wasteful number, since it uses less digits than its factorization.

3547897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15722.

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

The square root of 3547897 is about 1883.5862072122. The cubic root of 3547897 is about 152.5189011778.

It can be divided in two parts, 3547 and 897, that added together give a palindrome (4444).

The spelling of 3547897 in words is "three million, five hundred forty-seven thousand, eight hundred ninety-seven".