3649599409 has 2 divisors, whose sum is σ = 3649599410. Its totient is φ = 3649599408.

The previous prime is 3649599361. The next prime is 3649599469. The reversal of 3649599409 is 9049959463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2342560000 + 1307039409 = 48400^2 + 36153^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649599409 - 2⁷ = 3649599281 is a prime.

It is a super-3 number, since 3×3649599409³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3649599469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824799704 + 1824799705.

It is an arithmetic number, because the mean of its divisors is an integer number (1824799705).

Almost surely, 2^3649599409 is an apocalyptic number.

It is an amenable number.

3649599409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649599409 is an equidigital number, since it uses as much as digits as its factorization.

3649599409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The square root of 3649599409 is about 60411.9144622979. The cubic root of 3649599409 is about 1539.6253950544.

The spelling of 3649599409 in words is "three billion, six hundred forty-nine million, five hundred ninety-nine thousand, four hundred nine".