1448821 has 4 divisors (see below), whose sum is σ = 1580544. Its totient is φ = 1317100.

The previous prime is 1448819. The next prime is 1448827. The reversal of 1448821 is 1288441.

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 1448821 - 2¹ = 1448819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1448821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448827) 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, 65845 + ... + 65866.

It is an arithmetic number, because the mean of its divisors is an integer number (395136).

2^1448821 is an apocalyptic number.

1448821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1448821 is a deficient number, since it is larger than the sum of its proper divisors (131723).

1448821 is a wasteful number, since it uses less digits than its factorization.

1448821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131722.

The product of its digits is 2048, while the sum is 28.

The square root of 1448821 is about 1203.6698052207. The cubic root of 1448821 is about 113.1544342076.

The spelling of 1448821 in words is "one million, four hundred forty-eight thousand, eight hundred twenty-one".