3905449 has 2 divisors, whose sum is σ = 3905450. Its totient is φ = 3905448.

The previous prime is 3905443. The next prime is 3905467. The reversal of 3905449 is 9445093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3489424 + 416025 = 1868^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 3905449 - 2³ = 3905441 is a prime.

It is not a weakly prime, because it can be changed into another prime (3905441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952724 + 1952725.

It is an arithmetic number, because the mean of its divisors is an integer number (1952725).

Almost surely, 2^3905449 is an apocalyptic number.

It is an amenable number.

3905449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3905449 is an equidigital number, since it uses as much as digits as its factorization.

3905449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3905449 is about 1976.2208884636. The cubic root of 3905449 is about 157.4793657355.

The spelling of 3905449 in words is "three million, nine hundred five thousand, four hundred forty-nine".