3925569 has 4 divisors (see below), whose sum is σ = 5234096. Its totient is φ = 2617044.

The previous prime is 3925553. The next prime is 3925583. The reversal of 3925569 is 9655293.

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: 9655293 = 3 ⋅3218431.

It is not a de Polignac number, because 3925569 - 2⁴ = 3925553 is a prime.

It is a super-2 number, since 2×3925569² = 30820183947522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3925549) 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, 654259 + ... + 654264.

It is an arithmetic number, because the mean of its divisors is an integer number (1308524).

Almost surely, 2^3925569 is an apocalyptic number.

It is an amenable number.

3925569 is a deficient number, since it is larger than the sum of its proper divisors (1308527).

3925569 is a wasteful number, since it uses less digits than its factorization.

3925569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308526.

The product of its digits is 72900, while the sum is 39.

The square root of 3925569 is about 1981.3048730571. The cubic root of 3925569 is about 157.7493354838.

The spelling of 3925569 in words is "three million, nine hundred twenty-five thousand, five hundred sixty-nine".