9722787226 has 4 divisors (see below), whose sum is σ = 14584180842. Its totient is φ = 4861393612.

The previous prime is 9722787223. The next prime is 9722787229. The reversal of 9722787226 is 6227872279.

9722787226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6227872279 = 76597 ⋅81307.

It is an interprime number because it is at equal distance from previous prime (9722787223) and next prime (9722787229).

It can be written as a sum of positive squares in only one way, i.e., 7396172001 + 2326615225 = 86001^2 + 48235^2 .

It is not an unprimeable number, because it can be changed into a prime (9722787223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2430696805 + ... + 2430696808.

Almost surely, 2^9722787226 is an apocalyptic number.

9722787226 is a deficient number, since it is larger than the sum of its proper divisors (4861393616).

9722787226 is a wasteful number, since it uses less digits than its factorization.

9722787226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861393615.

The product of its digits is 2370816, while the sum is 52.

The square root of 9722787226 is about 98604.1947687825. The cubic root of 9722787226 is about 2134.3399522011.

The spelling of 9722787226 in words is "nine billion, seven hundred twenty-two million, seven hundred eighty-seven thousand, two hundred twenty-six".