3499809 has 4 divisors (see below), whose sum is σ = 4666416. Its totient is φ = 2333204.

The previous prime is 3499799. The next prime is 3499823. The reversal of 3499809 is 9089943.

3499809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 9089943 = 3 ⋅3029981.

It is a cyclic number.

It is not a de Polignac number, because 3499809 - 2⁷ = 3499681 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3499829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583299 + ... + 583304.

It is an arithmetic number, because the mean of its divisors is an integer number (1166604).

Almost surely, 2^3499809 is an apocalyptic number.

It is an amenable number.

3499809 is a deficient number, since it is larger than the sum of its proper divisors (1166607).

3499809 is a wasteful number, since it uses less digits than its factorization.

3499809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166606.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3499809 is about 1870.7776457933. Note that the first 3 decimals coincide. The cubic root of 3499809 is about 151.8266866936.

The spelling of 3499809 in words is "three million, four hundred ninety-nine thousand, eight hundred nine".