3840569 has 4 divisors (see below), whose sum is σ = 3844596. Its totient is φ = 3836544.

The previous prime is 3840547. The next prime is 3840601. The reversal of 3840569 is 9650483.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9650483 = 521 ⋅18523.

It can be written as a sum of positive squares in 2 ways, for example, as 1530169 + 2310400 = 1237^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 3840569 - 2⁸ = 3840313 is a prime.

It is a super-2 number, since 2×3840569² = 29499940487522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840169) 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, 317 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (961149).

Almost surely, 2^3840569 is an apocalyptic number.

It is an amenable number.

3840569 is a deficient number, since it is larger than the sum of its proper divisors (4027).

3840569 is a wasteful number, since it uses less digits than its factorization.

3840569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3840569 is about 1959.7369721470. The cubic root of 3840569 is about 156.6024398470.

The spelling of 3840569 in words is "three million, eight hundred forty thousand, five hundred sixty-nine".