1005449 has 4 divisors (see below), whose sum is σ = 1009536. Its totient is φ = 1001364.

The previous prime is 1005439. The next prime is 1005457. The reversal of 1005449 is 9445001.

It is a happy number.

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 1005449 - 2¹² = 1001353 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005409) 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, 1649 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (252384).

2^1005449 is an apocalyptic number.

It is an amenable number.

1005449 is a deficient number, since it is larger than the sum of its proper divisors (4087).

1005449 is an equidigital number, since it uses as much as digits as its factorization.

1005449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1005449 is about 1002.7207986274. The cubic root of 1005449 is about 100.1813044217.

The spelling of 1005449 in words is "one million, five thousand, four hundred forty-nine".