1476226721 has 4 divisors (see below), whose sum is σ = 1482562692. Its totient is φ = 1469890752.

The previous prime is 1476226711. The next prime is 1476226723. The reversal of 1476226721 is 1276226741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1276226741 = 18049 ⋅70709.

It can be written as a sum of positive squares in 2 ways, for example, as 311028496 + 1165198225 = 17636^2 + 34135^2 .

It is not a de Polignac number, because 1476226721 - 2²² = 1472032417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1476226723) 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, 3167636 + ... + 3168101.

It is an arithmetic number, because the mean of its divisors is an integer number (370640673).

Almost surely, 2^1476226721 is an apocalyptic number.

It is an amenable number.

1476226721 is a deficient number, since it is larger than the sum of its proper divisors (6335971).

1476226721 is an equidigital number, since it uses as much as digits as its factorization.

1476226721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335970.

The product of its digits is 56448, while the sum is 38.

The square root of 1476226721 is about 38421.6959672527. The cubic root of 1476226721 is about 1138.6345406347.

The spelling of 1476226721 in words is "one billion, four hundred seventy-six million, two hundred twenty-six thousand, seven hundred twenty-one".