3407809 has 4 divisors (see below), whose sum is σ = 3411504. Its totient is φ = 3404116.

The previous prime is 3407777. The next prime is 3407813. The reversal of 3407809 is 9087043.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9087043 = 7 ⋅1298149.

It is a cyclic number.

It is not a de Polignac number, because 3407809 - 2⁵ = 3407777 is a prime.

It is a super-2 number, since 2×3407809² = 23226324360962, which contains 22 as substring.

It is a Duffinian number.

3407809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3407609) 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, 834 + ... + 2740.

It is an arithmetic number, because the mean of its divisors is an integer number (852876).

Almost surely, 2^3407809 is an apocalyptic number.

It is an amenable number.

3407809 is a deficient number, since it is larger than the sum of its proper divisors (3695).

3407809 is a wasteful number, since it uses less digits than its factorization.

3407809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3407809 is about 1846.0251894273. The cubic root of 3407809 is about 150.4844926867.

The spelling of 3407809 in words is "three million, four hundred seven thousand, eight hundred nine".