3645449 has 2 divisors, whose sum is σ = 3645450. Its totient is φ = 3645448.

The previous prime is 3645419. The next prime is 3645469. The reversal of 3645449 is 9445463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3489424 + 156025 = 1868^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645449 - 2⁸ = 3645193 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3 + 6⁸ + 4⁵ + 5⁹ + 4⁵ + 4⁶ + 9⁴ .

It is not a weakly prime, because it can be changed into another prime (3645409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822724 + 1822725.

It is an arithmetic number, because the mean of its divisors is an integer number (1822725).

Almost surely, 2^3645449 is an apocalyptic number.

It is an amenable number.

3645449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645449 is an equidigital number, since it uses as much as digits as its factorization.

3645449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 3645449 is about 1909.3058948215. The cubic root of 3645449 is about 153.9041541118.

The spelling of 3645449 in words is "three million, six hundred forty-five thousand, four hundred forty-nine".