3563969 has 4 divisors (see below), whose sum is σ = 3646896. Its totient is φ = 3481044.

The previous prime is 3563957. The next prime is 3563971. The reversal of 3563969 is 9693653.

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: 9693653 = 83 ⋅116791.

It is a cyclic number.

It is not a de Polignac number, because 3563969 - 2⁴ = 3563953 is a prime.

It is a super-2 number, since 2×3563969² = 25403750065922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3563909) 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, 41399 + ... + 41484.

It is an arithmetic number, because the mean of its divisors is an integer number (911724).

Almost surely, 2^3563969 is an apocalyptic number.

It is an amenable number.

3563969 is a deficient number, since it is larger than the sum of its proper divisors (82927).

3563969 is an equidigital number, since it uses as much as digits as its factorization.

3563969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82926.

The product of its digits is 131220, while the sum is 41.

The square root of 3563969 is about 1887.8477163161. The cubic root of 3563969 is about 152.7488582127.

The spelling of 3563969 in words is "three million, five hundred sixty-three thousand, nine hundred sixty-nine".