1479443221709 has 4 divisors (see below), whose sum is σ = 1503696389340. Its totient is φ = 1455190054080.

The previous prime is 1479443221687. The next prime is 1479443221727. The reversal of 1479443221709 is 9071223449741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 672158941609 + 807284280100 = 819853^2 + 898490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1479443221709 - 2¹⁶ = 1479443156173 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 (1479443221759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12126583724 + ... + 12126583845.

It is an arithmetic number, because the mean of its divisors is an integer number (375924097335).

Almost surely, 2^{1479443221709} is an apocalyptic number.

It is an amenable number.

1479443221709 is a deficient number, since it is larger than the sum of its proper divisors (24253167631).

1479443221709 is an equidigital number, since it uses as much as digits as its factorization.

1479443221709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24253167630.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 1479443221709 in words is "one trillion, four hundred seventy-nine billion, four hundred forty-three million, two hundred twenty-one thousand, seven hundred nine".