9147722 has 4 divisors (see below), whose sum is σ = 13721586. Its totient is φ = 4573860.

The previous prime is 9147707. The next prime is 9147727. The reversal of 9147722 is 2277419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2277419 = 577 ⋅3947.

It can be written as a sum of positive squares in only one way, i.e., 7295401 + 1852321 = 2701^2 + 1361^2 .

It is not an unprimeable number, because it can be changed into a prime (9147727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286929 + ... + 2286932.

Almost surely, 2^9147722 is an apocalyptic number.

9147722 is a deficient number, since it is larger than the sum of its proper divisors (4573864).

9147722 is a wasteful number, since it uses less digits than its factorization.

9147722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573863.

The product of its digits is 7056, while the sum is 32.

The square root of 9147722 is about 3024.5201272268. The cubic root of 9147722 is about 209.1402643528.

The spelling of 9147722 in words is "nine million, one hundred forty-seven thousand, seven hundred twenty-two".