1479721 has 2 divisors, whose sum is σ = 1479722. Its totient is φ = 1479720.

The previous prime is 1479713. The next prime is 1479727. The reversal of 1479721 is 1279741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 189225 = 1136^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1479721 - 2³ = 1479713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1479727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739860 + 739861.

It is an arithmetic number, because the mean of its divisors is an integer number (739861).

2^1479721 is an apocalyptic number.

It is an amenable number.

1479721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479721 is an equidigital number, since it uses as much as digits as its factorization.

1479721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 1479721 is about 1216.4378323614. The cubic root of 1479721 is about 113.9532228319.

The spelling of 1479721 in words is "one million, four hundred seventy-nine thousand, seven hundred twenty-one".