3895509 has 8 divisors (see below), whose sum is σ = 5209920. Its totient is φ = 2589056.

The previous prime is 3895481. The next prime is 3895511. The reversal of 3895509 is 9055983.

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

It is a cyclic number.

It is not a de Polignac number, because 3895509 - 2¹⁵ = 3862741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3895709) 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, 732 + ... + 2885.

It is an arithmetic number, because the mean of its divisors is an integer number (651240).

Almost surely, 2^3895509 is an apocalyptic number.

It is an amenable number.

3895509 is a deficient number, since it is larger than the sum of its proper divisors (1314411).

3895509 is a wasteful number, since it uses less digits than its factorization.

3895509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 3895509 is about 1973.7043851600. The cubic root of 3895509 is about 157.3456487335.

The spelling of 3895509 in words is "three million, eight hundred ninety-five thousand, five hundred nine".