3897569 has 8 divisors (see below), whose sum is σ = 4287360. Its totient is φ = 3520656.

The previous prime is 3897559. The next prime is 3897581. The reversal of 3897569 is 9657983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3897569 is a prime.

It is a super-2 number, since 2×3897569² = 30382088219522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a d-powerful number, because it can be written as 3² + 8⁷ + 9 + 7⁶ + 5⁵ + 6⁸ + 9 .

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3897559) 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 7 ways as a sum of consecutive naturals, for example, 2579 + ... + 3800.

It is an arithmetic number, because the mean of its divisors is an integer number (535920).

Almost surely, 2^3897569 is an apocalyptic number.

It is an amenable number.

3897569 is a deficient number, since it is larger than the sum of its proper divisors (389791).

3897569 is a wasteful number, since it uses less digits than its factorization.

3897569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439.

The product of its digits is 408240, while the sum is 47.

The square root of 3897569 is about 1974.2261775187. The cubic root of 3897569 is about 157.3733793774.

The spelling of 3897569 in words is "three million, eight hundred ninety-seven thousand, five hundred sixty-nine".