3240403409 has 2 divisors, whose sum is σ = 3240403410. Its totient is φ = 3240403408.

The previous prime is 3240403399. The next prime is 3240403447. The reversal of 3240403409 is 9043040423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3144069184 + 96334225 = 56072^2 + 9815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3240403409 is a prime.

It is not a weakly prime, because it can be changed into another prime (3240403459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620201704 + 1620201705.

It is an arithmetic number, because the mean of its divisors is an integer number (1620201705).

Almost surely, 2^3240403409 is an apocalyptic number.

It is an amenable number.

3240403409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240403409 is an equidigital number, since it uses as much as digits as its factorization.

3240403409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 3240403409 is about 56924.5413595929. The cubic root of 3240403409 is about 1479.7886551451.

The spelling of 3240403409 in words is "three billion, two hundred forty million, four hundred three thousand, four hundred nine".