1479821 has 4 divisors (see below), whose sum is σ = 1691232. Its totient is φ = 1268412.

The previous prime is 1479817. The next prime is 1479823. The reversal of 1479821 is 1289741.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1289741 = 167 ⋅7723.

It is a cyclic number.

It is not a de Polignac number, because 1479821 - 2² = 1479817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1479823) 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, 105695 + ... + 105708.

It is an arithmetic number, because the mean of its divisors is an integer number (422808).

2^1479821 is an apocalyptic number.

It is an amenable number.

1479821 is a deficient number, since it is larger than the sum of its proper divisors (211411).

1479821 is an equidigital number, since it uses as much as digits as its factorization.

1479821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211410.

The product of its digits is 4032, while the sum is 32.

The square root of 1479821 is about 1216.4789352882. The cubic root of 1479821 is about 113.9557897720.

The spelling of 1479821 in words is "one million, four hundred seventy-nine thousand, eight hundred twenty-one".