8442769 has 2 divisors, whose sum is σ = 8442770. Its totient is φ = 8442768.

The previous prime is 8442767. The next prime is 8442779. The reversal of 8442769 is 9672448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 263169 = 2860^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 8442769 - 2¹ = 8442767 is a prime.

It is a super-2 number, since 2×8442769² = 142560696774722, which contains 22 as substring.

Together with 8442767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8442767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221384 + 4221385.

It is an arithmetic number, because the mean of its divisors is an integer number (4221385).

Almost surely, 2^8442769 is an apocalyptic number.

It is an amenable number.

8442769 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442769 is an equidigital number, since it uses as much as digits as its factorization.

8442769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 8442769 is about 2905.6443347389. The cubic root of 8442769 is about 203.6236895122.

The spelling of 8442769 in words is "eight million, four hundred forty-two thousand, seven hundred sixty-nine".