3490909 has 4 divisors (see below), whose sum is σ = 3521916. Its totient is φ = 3459904.

The previous prime is 3490891. The next prime is 3490937. The reversal of 3490909 is 9090943.

3490909 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 an emirpimes, since its reverse is a distinct semiprime: 9090943 = 2749 ⋅3307.

It can be written as a sum of positive squares in 2 ways, for example, as 525625 + 2965284 = 725^2 + 1722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3490909 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

3490909 is a modest number, since divided by 909 gives 349 as remainder.

3490909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3490939) 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, 15334 + ... + 15559.

It is an arithmetic number, because the mean of its divisors is an integer number (880479).

Almost surely, 2^3490909 is an apocalyptic number.

It is an amenable number.

3490909 is a deficient number, since it is larger than the sum of its proper divisors (31007).

3490909 is a wasteful number, since it uses less digits than its factorization.

3490909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31006.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3490909 is about 1868.3974416596. The cubic root of 3490909 is about 151.6978792314.

Adding to 3490909 its sum of digits (34), we get a palindrome (3490943).

The spelling of 3490909 in words is "three million, four hundred ninety thousand, nine hundred nine".