8423447 has 2 divisors, whose sum is σ = 8423448. Its totient is φ = 8423446.

The previous prime is 8423423. The next prime is 8423461. The reversal of 8423447 is 7443248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8423447 - 2¹² = 8419351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8423407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211723 + 4211724.

It is an arithmetic number, because the mean of its divisors is an integer number (4211724).

Almost surely, 2^8423447 is an apocalyptic number.

8423447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8423447 is an equidigital number, since it uses as much as digits as its factorization.

8423447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 32.

The square root of 8423447 is about 2902.3175222570. The cubic root of 8423447 is about 203.4682341094.

The spelling of 8423447 in words is "eight million, four hundred twenty-three thousand, four hundred forty-seven".