3497809 has 4 divisors (see below), whose sum is σ = 3997504. Its totient is φ = 2998116.

The previous prime is 3497779. The next prime is 3497827. The reversal of 3497809 is 9087943.

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.

It is a cyclic number.

It is not a de Polignac number, because 3497809 - 2⁹ = 3497297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3497849) 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 3 ways as a sum of consecutive naturals, for example, 249837 + ... + 249850.

It is an arithmetic number, because the mean of its divisors is an integer number (999376).

Almost surely, 2^3497809 is an apocalyptic number.

It is an amenable number.

3497809 is a deficient number, since it is larger than the sum of its proper divisors (499695).

3497809 is an equidigital number, since it uses as much as digits as its factorization.

3497809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499694.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 3497809 is about 1870.2430323356. The cubic root of 3497809 is about 151.7977602356.

The spelling of 3497809 in words is "three million, four hundred ninety-seven thousand, eight hundred nine".