3390809 has 2 divisors, whose sum is σ = 3390810. Its totient is φ = 3390808.

The previous prime is 3390787. The next prime is 3390839. The reversal of 3390809 is 9080933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2755600 + 635209 = 1660^2 + 797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3390809 is a prime.

It is a super-2 number, since 2×3390809² = 22995171348962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3390839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695404 + 1695405.

It is an arithmetic number, because the mean of its divisors is an integer number (1695405).

Almost surely, 2^3390809 is an apocalyptic number.

It is an amenable number.

3390809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3390809 is an equidigital number, since it uses as much as digits as its factorization.

3390809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3390809 is about 1841.4149450898. The cubic root of 3390809 is about 150.2338426687.

The spelling of 3390809 in words is "three million, three hundred ninety thousand, eight hundred nine".