3895009 has 4 divisors (see below), whose sum is σ = 3921300. Its totient is φ = 3868720.

The previous prime is 3894991. The next prime is 3895037. The reversal of 3895009 is 9005983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9005983 = 7 ⋅1286569.

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 2387025 = 1228^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 3895009 - 2⁵ = 3894977 is a prime.

It is a super-2 number, since 2×3895009² = 30342190220162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3895039) 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, 12922 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (980325).

Almost surely, 2^3895009 is an apocalyptic number.

It is an amenable number.

3895009 is a deficient number, since it is larger than the sum of its proper divisors (26291).

3895009 is a wasteful number, since it uses less digits than its factorization.

3895009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26290.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 3895009 is about 1973.5777157234. The cubic root of 3895009 is about 157.3389165204.

The spelling of 3895009 in words is "three million, eight hundred ninety-five thousand, nine".