4005449 has 4 divisors (see below), whose sum is σ = 4577664. Its totient is φ = 3433236.

The previous prime is 4005433. The next prime is 4005457. The reversal of 4005449 is 9445004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4005449 - 2⁴ = 4005433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4005499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286097 + ... + 286110.

It is an arithmetic number, because the mean of its divisors is an integer number (1144416).

Almost surely, 2^4005449 is an apocalyptic number.

It is an amenable number.

4005449 is a deficient number, since it is larger than the sum of its proper divisors (572215).

4005449 is an equidigital number, since it uses as much as digits as its factorization.

4005449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572214.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4005449 is about 2001.3617863845. The cubic root of 4005449 is about 158.8121537268.

The spelling of 4005449 in words is "four million, five thousand, four hundred forty-nine".