9450244721 has 4 divisors (see below), whose sum is σ = 9450608244. Its totient is φ = 9449881200.

The previous prime is 9450244697. The next prime is 9450244751. The reversal of 9450244721 is 1274420549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1274420549 = 307 ⋅4151207.

It can be written as a sum of positive squares in 2 ways, for example, as 9189906496 + 260338225 = 95864^2 + 16135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9450244721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9450244751) 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, 139490 + ... + 195851.

It is an arithmetic number, because the mean of its divisors is an integer number (2362652061).

Almost surely, 2^9450244721 is an apocalyptic number.

It is an amenable number.

9450244721 is a deficient number, since it is larger than the sum of its proper divisors (363523).

9450244721 is a wasteful number, since it uses less digits than its factorization.

9450244721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363522.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 9450244721 is about 97212.3691769725. The cubic root of 9450244721 is about 2114.2078694301.

The spelling of 9450244721 in words is "nine billion, four hundred fifty million, two hundred forty-four thousand, seven hundred twenty-one".