3640369 has 2 divisors, whose sum is σ = 3640370. Its totient is φ = 3640368.

The previous prime is 3640333. The next prime is 3640379. The reversal of 3640369 is 9630463.

3640369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3168400 + 471969 = 1780^2 + 687^2 .

It is an emirp because it is prime and its reverse (9630463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640369 is a prime.

It is a super-2 number, since 2×3640369² = 26504572912322, which contains 22 as substring.

It is equal to p₂₅₉₄₄₇ and since 3640369 and 259447 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3640369.

It is not a weakly prime, because it can be changed into another prime (3640309) 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 as a sum of consecutive naturals, namely, 1820184 + 1820185.

It is an arithmetic number, because the mean of its divisors is an integer number (1820185).

Almost surely, 2^3640369 is an apocalyptic number.

It is an amenable number.

3640369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640369 is an equidigital number, since it uses as much as digits as its factorization.

3640369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3640369 is about 1907.9751046594. The cubic root of 3640369 is about 153.8326314589.

The spelling of 3640369 in words is "three million, six hundred forty thousand, three hundred sixty-nine".