1476117721 has 4 divisors (see below), whose sum is σ = 1589665252. Its totient is φ = 1362570192.

The previous prime is 1476117691. The next prime is 1476117749. The reversal of 1476117721 is 1277116741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1277116741 = 229 ⋅5576929.

It can be written as a sum of positive squares in 2 ways, for example, as 837292096 + 638825625 = 28936^2 + 25275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1476117721 - 2⁵ = 1476117689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1476117221) 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, 56773746 + ... + 56773771.

It is an arithmetic number, because the mean of its divisors is an integer number (397416313).

Almost surely, 2^1476117721 is an apocalyptic number.

It is an amenable number.

1476117721 is a deficient number, since it is larger than the sum of its proper divisors (113547531).

1476117721 is a wasteful number, since it uses less digits than its factorization.

1476117721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113547530.

The product of its digits is 16464, while the sum is 37.

The square root of 1476117721 is about 38420.2774716685. The cubic root of 1476117721 is about 1138.6065155313.

The spelling of 1476117721 in words is "one billion, four hundred seventy-six million, one hundred seventeen thousand, seven hundred twenty-one".