7868447 has 2 divisors, whose sum is σ = 7868448. Its totient is φ = 7868446.

The previous prime is 7868437. The next prime is 7868449. The reversal of 7868447 is 7448687.

It is a strong prime.

It is an emirp because it is prime and its reverse (7448687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7868447 - 2⁴ = 7868431 is a prime.

Together with 7868449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7868398 and 7868407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7868449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3934223 + 3934224.

It is an arithmetic number, because the mean of its divisors is an integer number (3934224).

Almost surely, 2^7868447 is an apocalyptic number.

7868447 is a deficient number, since it is larger than the sum of its proper divisors (1).

7868447 is an equidigital number, since it uses as much as digits as its factorization.

7868447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 44.

The square root of 7868447 is about 2805.0752218078. The cubic root of 7868447 is about 198.8976603996.

The spelling of 7868447 in words is "seven million, eight hundred sixty-eight thousand, four hundred forty-seven".