8722969 has 2 divisors, whose sum is σ = 8722970. Its totient is φ = 8722968.

The previous prime is 8722949. The next prime is 8722981. The reversal of 8722969 is 9692278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7912969 + 810000 = 2813^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 8722969 - 2⁷ = 8722841 is a prime.

It is a super-2 number, since 2×8722969² = 152180376349922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁵ + 7³ + 2¹³ + 2²³ + 9⁴ + 6⁷ + 9⁴ .

8722969 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8722949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4361484 + 4361485.

It is an arithmetic number, because the mean of its divisors is an integer number (4361485).

Almost surely, 2^8722969 is an apocalyptic number.

It is an amenable number.

8722969 is a deficient number, since it is larger than the sum of its proper divisors (1).

8722969 is an equidigital number, since it uses as much as digits as its factorization.

8722969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 8722969 is about 2953.4672843964. The cubic root of 8722969 is about 205.8518509387.

The spelling of 8722969 in words is "eight million, seven hundred twenty-two thousand, nine hundred sixty-nine".