3499609 has 2 divisors, whose sum is σ = 3499610. Its totient is φ = 3499608.

The previous prime is 3499607. The next prime is 3499619. The reversal of 3499609 is 9069943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3229209 + 270400 = 1797^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 3499609 - 2¹ = 3499607 is a prime.

Together with 3499607, it forms a pair of twin primes.

3499609 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3499607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749804 + 1749805.

It is an arithmetic number, because the mean of its divisors is an integer number (1749805).

Almost surely, 2^3499609 is an apocalyptic number.

It is an amenable number.

3499609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3499609 is an equidigital number, since it uses as much as digits as its factorization.

3499609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3499609 is about 1870.7241913227. The cubic root of 3499609 is about 151.8237945438.

The spelling of 3499609 in words is "three million, four hundred ninety-nine thousand, six hundred nine".